19 (number)
19 (nineteen) is the natural number following 18 and preceding 20. It is a prime number.
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| Cardinal | nineteen | |||
| Ordinal | 19th (nineteenth) | |||
| Numeral system | nonadecimal | |||
| Factorization | prime | |||
| Prime | 8th | |||
| Divisors | 1, 19 | |||
| Greek numeral | ΙΘ´ | |||
| Roman numeral | XIX | |||
| Binary | 100112 | |||
| Ternary | 2013 | |||
| Senary | 316 | |||
| Octal | 238 | |||
| Duodecimal | 1712 | |||
| Hexadecimal | 1316 | |||
| Hebrew numeral | י"ט | |||
| Babylonian numeral | 𒌋𒐝 | |||
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