165920924 has 12 divisors (see below), whose sum is σ = 312697224. Its totient is φ = 76578864.

The previous prime is 165920917. The next prime is 165920933. The reversal of 165920924 is 429029561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595342 + ... + 1595445.

It is an arithmetic number, because the mean of its divisors is an integer number (26058102).

Almost surely, 2^165920924 is an apocalyptic number.

It is an amenable number.

165920924 is a deficient number, since it is larger than the sum of its proper divisors (146776300).

165920924 is a wasteful number, since it uses less digits than its factorization.

165920924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190804 (or 3190802 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 165920924 is about 12881.0296172317. The cubic root of 165920924 is about 549.4991848811.

The spelling of 165920924 in words is "one hundred sixty-five million, nine hundred twenty thousand, nine hundred twenty-four".