18812621160 has 48 divisors (see below), whose sum is σ = 61141019940. Its totient is φ = 5016698880.

The previous prime is 18812621111. The next prime is 18812621171. The reversal of 18812621160 is 6112621881.

18812621160 is a `hidden beast` number, since 1 + 8 + 8 + 12 + 621 + 16 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17454108996 + 1358512164 = 132114^2 + 36858^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 26128281 + ... + 26129000.

Almost surely, 2^18812621160 is an apocalyptic number.

18812621160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18812621160 is an abundant number, since it is smaller than the sum of its proper divisors (42328398780).

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

18812621160 is a wasteful number, since it uses less digits than its factorization.

18812621160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52257298 (or 52257291 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 18812621160 in words is "eighteen billion, eight hundred twelve million, six hundred twenty-one thousand, one hundred sixty".