| Nominal | 18881 |
| Cardinal | eighteen thousand eight hundred eighty-one |
Cardinal eighteen thousand eight hundred eighty-one | |
| Ordinal | 18,881st |
| Number of digits | 5 |
| Sum of digits | 26 |
| Product of digits | 512 |
| Number parity | Odd |
| Prime factorization | 79 x 239 |
| Prime factors | 79, 239 |
| Number of distinct prime factors ω(n) | 2 |
| Total number of prime factors Ω(n) | 2 |
| Sum of prime factors | 318 |
| Product of prime factors | 18881 |
| Is 18881 a prime number? | No |
| Is 18881 a semiprime number? | Yes |
| Is 18881 a Chen prime number? | No |
| Is 18881 a Mersenne prime number? | No |
| Is 18881 a Catalan number? | No |
| Is 18881 a Fibonacci number? | No |
| Is 18881 a Idoneal number? | No |
| Square of 18881 (n2) | 356492161 |
| Cube of 18881 (n3) | 6730928491841 |
| Square root of 18881 | 137.40815114104 |
| Natural Logarithm (ln) of 18881 | 9.8459114043985 |
| Decimal Logarithm (log) of 18881 | 4.2760249922386 |
| Sine of 18881 | 0.028148206944863 |
| Cosecant of 18881 | 35.526241581171 |
| Cosine of 18881 | 0.99960376072011 |
| Secant of 18881 | 1.0003963963477 |
| Tangent of 18881 | 0.02815936479129 |
| Cotangent of 18881 | 35.512164688789 |
| The spelling of 18881 in words is "eighteen thousand eight hundred eighty-one", meaning that: |
| 18881 is not an aban number (as it contains the letter a) |
| 18881 is not an eban number (as it contains the letter e) |
| 18881 is not an iban number (as it contains the letter i) |
| 18881 is not an oban number (as it contains the letter o) |
| 18881 is not a tban number (as it contains the letter t) |
| 18881 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১৮৮৮১ |
| Eastern Arabic numerals | ١٨٬٨٨١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍩𓎍𓏺 |
| Khmer numerals | ១៨៨៨១ |
| Japanese numerals | 一万八千八百八十一 |
| Roman numerals | n/a |
| Thai numerals | ๑๘๘๘๑ |
| Arabic | ثمانية عشر ألف و ثمانية مائة و واحد و ثمانون |
| Croatian | osamnaest tisuća osamsto osamdeset i jedan |
| Czech | osmnáct tisíc osm set osmdesát jeden |
| Danish | atten tusinde otte hundrede en og firs |
| Dutch | achttienduizend achthonderdéénentachtig |
| Estonian | akpe wuienyi alafa enyi blaenyi vɔ ɖekɛ |
| Faroese | átjan tusin og áttahundraðogáttatiein |
| Filipino | labíng-walóng libó’t walóng daán at walóng pû’t isá |
| Finnish | kahdeksantoistatuhattakahdeksansataakahdeksankymmentäyksi |
| French | dix-huit mille huit cent quatre-vingt-un |
| Greek | δεκαοκτώ χίλιάδες οκτακόσια ογδόντα ένα |
| German | achtzehntausendachthunderteinundachtzig |
| Hebrew | שמונה עשר אלף שמונה מאות שמונים ואחת |
| Hindi | अठारह हज़ार आठ सौ इक्यासी |
| Hungarian | tizennyolcezernyolcszáznyolcvanegy |
| Icelandic | átján þúsund og áttahundrað og áttatíu og einn |
| Indonesian | delapan belas ribu delapan ratus delapan puluh satu |
| Italian | diciottomilaottocentoottantuno |
| Japanese | 一万八千八百八十一 |
| Korean | 만 팔천팔백팔십일 |
| Latvian | astoņpadsmit tūkstoši astoņsimt astoņdesmit viens |
| Lithuanian | aštuoniolika tūkstančių aštuoni šimtai aštuoniasdešimt vienas |
| Norwegian | atten tusen åtte hundre og åttién |
| Persian | هجده هزار و هشتصد و هشتاد و یک |
| Polish | osiemnaście tysięcy osiemset osiemdziesiąt jeden |
| Portuguese | dezoito mil oitocentos e oitenta e um |
| Romanian | optsprezece mii opt sute optzeci şi unu |
| Russian | восемнадцать тысяч восемьсот восемьдесят один |
| Serbian | осамнаест хиљада осамсто осамдесет и један |
| Slovak | osemnásť tisíc osemsto osemdesiatjeden |
| Slovene | asemnajst tisuću osemsto osemdeset ena |
| Spanish | dieciocho mil ochocientos ochenta y uno |
| Swahili | elfu kumi na nane, mia nane na themanini na moja |
| Swedish | artontusenåttahundraåttioen |
| Thai | หนึ่งหมื่นแปดพันแปดร้อยแปดสิบเอ็ด |
| Turkish | on sekiz bin sekiz yüz seksen bir |
| Ukrainian | вісімнадцять тисяч вісімсот вісімдесят один |
| Vietnamese | mười tám nghìn tám trăm tám mươi mốt |
| Number 18881 reversed | 18881 | |
| Unicode Character | U+49C1 | 䧁 |
| Unix Timestamp | Thu, 01 Jan 1970 05:14:41 +0000 | |