Back 18 (ахыԥхьаӡара) Abkhazian Achtzehn ALS 18 (عدد) Arabic 18 ARY 18 (ədəd) Azerbaijani ۱۸ (سایی) AZB 18 (angka) BAN 18 (число) Bulgarian ༡༨ (གྲངས་ཀ།) Tibetan Divuit Catalan
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| Cardinal | eighteen | |||
| Ordinal | 18th (eighteenth) | |||
| Numeral system | octodecimal | |||
| Factorization | 2 × 32 | |||
| Divisors | 1, 2, 3, 6, 9, 18 | |||
| Greek numeral | ΙΗ´ | |||
| Roman numeral | XVIII | |||
| Binary | 100102 | |||
| Ternary | 2003 | |||
| Senary | 306 | |||
| Octal | 228 | |||
| Duodecimal | 1612 | |||
| Hexadecimal | 1216 | |||
| Hebrew numeral | י"ח | |||
| Babylonian numeral | 𒌋𒐜 | |||
Look up eighteen in Wiktionary, the free dictionary.
18 (eighteen) is the natural number following 17 and preceding 19.
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