19191

19191 is a natural number preceding 19192 and succeeding 19190. It is an odd number. In Roman numerals, it would be represented as XIXCXI. The sum of its digits is 1 + 9 + 1 + 9 + 1 = 21.

The number 19191 is not a prime number. Its prime factorization can be determined by testing divisibility by small prime numbers. It is divisible by 3, as the sum of its digits is 21, which is divisible by 3. 19191 divided by 3 equals 6397. Further factorization of 6397 reveals that it is a prime number. Therefore, the prime factorization of 19191 is 3 × 6397.

In binary, 19191 is represented as 100101100100111. In hexadecimal, it is represented as 4AF7. The number has no widely recognized special mathematical properties beyond its composite nature. It does not appear to be a significant constant or a frequently used number in common scientific or engineering contexts.