164388920 has 16 divisors (see below), whose sum is σ = 369875160. Its totient is φ = 65755552.

The previous prime is 164388911. The next prime is 164388941. The reversal of 164388920 is 29883461.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2054822 + ... + 2054901.

Almost surely, 2^164388920 is an apocalyptic number.

164388920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164388920 is an abundant number, since it is smaller than the sum of its proper divisors (205486240).

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

164388920 is a wasteful number, since it uses less digits than its factorization.

164388920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109734 (or 4109730 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 164388920 is about 12821.4242578584. The cubic root of 164388920 is about 547.8027154941.

The spelling of 164388920 in words is "one hundred sixty-four million, three hundred eighty-eight thousand, nine hundred twenty".