18797562432 has 448 divisors, whose sum is σ = 63283795200. Its totient is φ = 5486745600.

The previous prime is 18797562313. The next prime is 18797562457. The reversal of 18797562432 is 23426579781.

It is a happy number.

18797562432 is a `hidden beast` number, since 1 + 8 + 7 + 9 + 7 + 5 + 624 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44649582 + ... + 44650002.

Almost surely, 2^18797562432 is an apocalyptic number.

18797562432 is a gapful number since it is divisible by the number (12) 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 18797562432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31641897600).

18797562432 is an abundant number, since it is smaller than the sum of its proper divisors (44486232768).

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

18797562432 is an equidigital number, since it uses as much as digits as its factorization.

18797562432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 466 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 18797562432 in words is "eighteen billion, seven hundred ninety-seven million, five hundred sixty-two thousand, four hundred thirty-two".