18957512 has 48 divisors (see below), whose sum is σ = 41768460. Its totient is φ = 8042496.

The previous prime is 18957481. The next prime is 18957527. The reversal of 18957512 is 21575981.

It can be written as a sum of positive squares in 2 ways, for example, as 18957316 + 196 = 4354^2 + 14^2 .

It is a super-2 number, since 2×18957512² = 718774522460288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53528 + ... + 53880.

Almost surely, 2^18957512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18957512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20884230).

18957512 is an abundant number, since it is smaller than the sum of its proper divisors (22810948).

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

18957512 is a wasteful number, since it uses less digits than its factorization.

18957512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 499 counting only the distinct ones).

The product of its digits is 25200, while the sum is 38.

The square root of 18957512 is about 4354.0225079804. The cubic root of 18957512 is about 266.6411128291.

The spelling of 18957512 in words is "eighteen million, nine hundred fifty-seven thousand, five hundred twelve".