18697952000 has 288 divisors, whose sum is σ = 57336849024. Its totient is φ = 5916672000.

The previous prime is 18697951997. The next prime is 18697952057. The reversal of 18697952000 is 25979681.

It is a super-2 number, since 2×18697952000² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2908790 + ... + 2915210.

Almost surely, 2^18697952000 is an apocalyptic number.

18697952000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18697952000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28668424512).

18697952000 is an abundant number, since it is smaller than the sum of its proper divisors (38638897024).

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

18697952000 is an equidigital number, since it uses as much as digits as its factorization.

18697952000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472 (or 6448 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 18697952000 in words is "eighteen billion, six hundred ninety-seven million, nine hundred fifty-two thousand".