164986956 has 60 divisors (see below), whose sum is σ = 454025880. Its totient is φ = 52099200.

The previous prime is 164986907. The next prime is 164986961. The reversal of 164986956 is 659689461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7245 + ... + 19556.

It is an arithmetic number, because the mean of its divisors is an integer number (7567098).

Almost surely, 2^164986956 is an apocalyptic number.

It is an amenable number.

164986956 is an abundant number, since it is smaller than the sum of its proper divisors (289038924).

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

164986956 is a wasteful number, since it uses less digits than its factorization.

164986956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26836 (or 26825 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 164986956 is about 12844.7248316186. The cubic root of 164986956 is about 548.4662015661.

The spelling of 164986956 in words is "one hundred sixty-four million, nine hundred eighty-six thousand, nine hundred fifty-six".