165787916 has 12 divisors (see below), whose sum is σ = 331575888. Its totient is φ = 71051952.

The previous prime is 165787889. The next prime is 165787957. The reversal of 165787916 is 619787561.

165787916 is an admirable number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 2960471 + ... + 2960526.

It is an arithmetic number, because the mean of its divisors is an integer number (27631324).

Almost surely, 2^165787916 is an apocalyptic number.

It is an amenable number.

165787916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165787916 is a wasteful number, since it uses less digits than its factorization.

165787916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921008 (or 5921006 counting only the distinct ones).

The product of its digits is 635040, while the sum is 50.

The square root of 165787916 is about 12875.8656408026. The cubic root of 165787916 is about 549.3523130572.

The spelling of 165787916 in words is "one hundred sixty-five million, seven hundred eighty-seven thousand, nine hundred sixteen".