18711952 has 20 divisors (see below), whose sum is σ = 41433856. Its totient is φ = 8019360.

The previous prime is 18711947. The next prime is 18711971. The reversal of 18711952 is 25911781.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83424 + ... + 83647.

Almost surely, 2^18711952 is an apocalyptic number.

It is an amenable number.

18711952 is an abundant number, since it is smaller than the sum of its proper divisors (22721904).

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

18711952 is a wasteful number, since it uses less digits than its factorization.

18711952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167086 (or 167080 counting only the distinct ones).

The product of its digits is 5040, while the sum is 34.

The square root of 18711952 is about 4325.7313832461. The cubic root of 18711952 is about 265.4848226837.

The spelling of 18711952 in words is "eighteen million, seven hundred eleven thousand, nine hundred fifty-two".