18634164 has 48 divisors (see below), whose sum is σ = 44960832. Its totient is φ = 6003712.

The previous prime is 18634141. The next prime is 18634169. The reversal of 18634164 is 46143681.

It is a super-3 number, since 3×18634164³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18634169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52612 + ... + 52964.

It is an arithmetic number, because the mean of its divisors is an integer number (936684).

Almost surely, 2^18634164 is an apocalyptic number.

It is an amenable number.

18634164 is an abundant number, since it is smaller than the sum of its proper divisors (26326668).

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

18634164 is a wasteful number, since it uses less digits than its factorization.

18634164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 18634164 is about 4316.7307073757. The cubic root of 18634164 is about 265.1164268282.

The spelling of 18634164 in words is "eighteen million, six hundred thirty-four thousand, one hundred sixty-four".