natural number From Wikipedia, the free encyclopedia

**19** (**nineteen**) is a number. It comes between eighteen and twenty, and is an odd number. It is also the 8th prime number, after 2, 3, 5, 7, 11, 13, and 17. In Ordinal, It’s 19th (nineteenth).

| ||||
---|---|---|---|---|

Cardinal | nineteen | |||

Ordinal | 19th (nineteenth) | |||

Factorization | prime | |||

Prime | 8th | |||

Divisors | 1, 19 | |||

Greek numeral | ΙΘ´ | |||

Roman numeral | XIX | |||

Binary | 10011_{2} | |||

Ternary | 201_{3} | |||

Quaternary | 103_{4} | |||

Quinary | 34_{5} | |||

Senary | 31_{6} | |||

Octal | 23_{8} | |||

Duodecimal | 17_{12} | |||

Hexadecimal | 13_{16} | |||

Vigesimal | J_{20} | |||

Base 36 | J_{36} |

In Roman numerals, 19 is written as **XIX**.

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