165492872 has 16 divisors (see below), whose sum is σ = 310441740. Its totient is φ = 82708416.

The previous prime is 165492863. The next prime is 165492893. The reversal of 165492872 is 278294561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 105801796 + 59691076 = 10286^2 + 7726^2 .

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, 23918 + ... + 30050.

Almost surely, 2^165492872 is an apocalyptic number.

It is an amenable number.

165492872 is a deficient number, since it is larger than the sum of its proper divisors (144948868).

165492872 is a wasteful number, since it uses less digits than its factorization.

165492872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512 (or 9508 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 165492872 is about 12864.4032896983. The cubic root of 165492872 is about 549.0262351113.

The spelling of 165492872 in words is "one hundred sixty-five million, four hundred ninety-two thousand, eight hundred seventy-two".