18790164 has 48 divisors (see below), whose sum is σ = 51284800. Its totient is φ = 5933088.

The previous prime is 18790157. The next prime is 18790169. The reversal of 18790164 is 46109781.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18790169) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2527 + ... + 6630.

Almost surely, 2^18790164 is an apocalyptic number.

It is an amenable number.

18790164 is an abundant number, since it is smaller than the sum of its proper divisors (32494636).

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

18790164 is a wasteful number, since it uses less digits than its factorization.

18790164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189 (or 9181 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 18790164 is about 4334.7622772189. The cubic root of 18790164 is about 265.8541986507.

The spelling of 18790164 in words is "eighteen million, seven hundred ninety thousand, one hundred sixty-four".