191172092 has 12 divisors (see below), whose sum is σ = 335501376. Its totient is φ = 95314560.

The previous prime is 191172061. The next prime is 191172101. The reversal of 191172092 is 290271191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66284 + ... + 69107.

It is an arithmetic number, because the mean of its divisors is an integer number (27958448).

Almost surely, 2^191172092 is an apocalyptic number.

It is an amenable number.

191172092 is a deficient number, since it is larger than the sum of its proper divisors (144329284).

191172092 is a wasteful number, since it uses less digits than its factorization.

191172092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135748 (or 135746 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 191172092 is about 13826.4996293350. The cubic root of 191172092 is about 576.0694320559.

Subtracting 191172092 from its reverse (290271191), we obtain a palindrome (99099099).

The spelling of 191172092 in words is "one hundred ninety-one million, one hundred seventy-two thousand, ninety-two".