| Nominal | 81164 |
| Cardinal | eighty-one thousand one hundred sixty-four |
Cardinal eighty-one thousand one hundred sixty-four | |
| Ordinal | 81,164th |
| Number of digits | 5 |
| Sum of digits | 20 |
| Product of digits | 192 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 103 x 197 |
| Prime factorization in exponent form | 22 x 103 x 197 |
| Prime factors | 2, 103, 197 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 4 |
| Sum of prime factors | 302 |
| Product of prime factors | 40582 |
| Is 81164 a prime number? | No |
| Is 81164 a semiprime number? | No |
| Is 81164 a Chen prime number? | No |
| Is 81164 a Mersenne prime number? | No |
| Is 81164 a Catalan number? | No |
| Is 81164 a Fibonacci number? | No |
| Is 81164 a Idoneal number? | No |
| Square of 81164 (n2) | 6587594896 |
| Cube of 81164 (n3) | 534675552138944 |
| Square root of 81164 | 284.89296235604 |
| Natural Logarithm (ln) of 81164 | 11.304227078088 |
| Decimal Logarithm (log) of 81164 | 4.9093634421947 |
| Sine of 81164 | -0.81561684456124 |
| Cosecant of 81164 | -1.2260658992863 |
| Cosine of 81164 | -0.57859239786569 |
| Secant of 81164 | -1.7283324213882 |
| Tangent of 81164 | 1.4096570358855 |
| Cotangent of 81164 | 0.70939240860939 |
| The spelling of 81164 in words is "eighty-one thousand one hundred sixty-four", meaning that: |
| 81164 is not an aban number (as it contains the letter a) |
| 81164 is not an eban number (as it contains the letter e) |
| 81164 is not an iban number (as it contains the letter i) |
| 81164 is not an oban number (as it contains the letter o) |
| 81164 is not a tban number (as it contains the letter t) |
| 81164 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৮১১৬৪ |
| Eastern Arabic numerals | ٨١٬١٦٤ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓆼𓍢𓎋𓏽 |
| Khmer numerals | ៨១១៦៤ |
| Japanese numerals | 八万千百六十四 |
| Roman numerals | n/a |
| Thai numerals | ๘๑๑๖๔ |
| Arabic | واحد و ثمانون ألف و مائة و أربعة و ستون |
| Croatian | osamdeset i jedna tisuća sto šezdeset i četiri |
| Czech | osmdesát jedna tisíc sto šedesát čtyři |
| Danish | en og firs tusinde et hundrede fire og tres |
| Dutch | éénentachtigduizend honderdvierenzestig |
| Estonian | akpe blaenyi vɔ ɖekɛ alafa ɖeka blaade vɔ ene |
| Faroese | áttatieitt tusin og eitthundraðogsekstifýre |
| Filipino | walóng pû’t isáng libó’t isáng daán at anim na pû’t ápat |
| Finnish | kahdeksankymmentäyksituhattasatakuusikymmentäneljä |
| French | quatre-vingt-un mille cent soixante-quatre |
| Greek | ογδόντα μία χίλιάδες εκατόν εξήντα τέσσερα |
| German | einundachtzigtausendeinhundertvierundsechzig |
| Hebrew | שמונים ואחד אלף מאה שישים וארבע |
| Hindi | इक्यासी हज़ार एक सौ चौंसठ |
| Hungarian | nyolcvanegyezerszázhatvannégy |
| Icelandic | áttatíu og eitt þúsund og eitthundrað og sextíu og fjórir |
| Indonesian | delapan puluh satu ribu seratus enam puluh empat |
| Italian | ottant e unmilacentosessantaquattro |
| Japanese | 八万千百六十四 |
| Korean | 팔만 천백육십사 |
| Latvian | astoņdesmit viens tūkstoši simt sešdesmit četri |
| Lithuanian | aštuoniasdešimt vienas tūkstantis šimtas šešiasdešimt keturi |
| Norwegian | åttiett tusen hundre og sekstifire |
| Persian | هشتاد و یک هزار و صد و شصت و چهار |
| Polish | osiemdziesiąt jeden tysięcy sto sześćdziesiąt cztery |
| Portuguese | oitenta e um mil cento e sessenta e quatro |
| Romanian | optzeci şi una mii una sută şasezeci şi patru |
| Russian | восемьдесят одна тысяча сто шестьдесят четыре |
| Serbian | осамдесет и једна хиљада сто шездесет и четири |
| Slovak | osemdesiatjedna tisíc jednasto šesťdesiatštyri |
| Slovene | osemdeset ena tisuću sto šestdeset štiri |
| Spanish | ochenta y un mil ciento sesenta y cuatro |
| Swahili | elfu themanini na moja, mia moja na sitini na nne |
| Swedish | åttioentusenenhundrasextiofyra |
| Thai | แปดหมื่นหนึ่งพันหนึ่งร้อยหกสิบสี่ |
| Turkish | seksen bir bin yüz altmış dört |
| Ukrainian | вісімдесят одна тисяча сто шістдесят чотири |
| Vietnamese | tám mươi mốt nghìn một trăm sáu mươi tư |
| Number 81164 reversed | 46118 | |
| Unicode Character | U+13D0C | |
| Unix Timestamp | Thu, 01 Jan 1970 22:32:44 +0000 | |