18908934 has 16 divisors (see below), whose sum is σ = 41256000. Its totient is φ = 5729960.

The previous prime is 18908927. The next prime is 18908951. The reversal of 18908934 is 43980981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143184 + ... + 143315.

It is an arithmetic number, because the mean of its divisors is an integer number (2578500).

Almost surely, 2^18908934 is an apocalyptic number.

18908934 is an abundant number, since it is smaller than the sum of its proper divisors (22347066).

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

18908934 is a wasteful number, since it uses less digits than its factorization.

18908934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286515.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 18908934 is about 4348.4404100781. The cubic root of 18908934 is about 266.4131649925.

The spelling of 18908934 in words is "eighteen million, nine hundred eight thousand, nine hundred thirty-four".