18892815040 has 56 divisors (see below), whose sum is σ = 49078390032. Its totient is φ = 6870113280.

The previous prime is 18892815001. The next prime is 18892815041. The reversal of 18892815040 is 4051829881.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18892815041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680119 + ... + 2687158.

It is an arithmetic number, because the mean of its divisors is an integer number (876399822).

Almost surely, 2^18892815040 is an apocalyptic number.

18892815040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18892815040 is an abundant number, since it is smaller than the sum of its proper divisors (30185574992).

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

18892815040 is a wasteful number, since it uses less digits than its factorization.

18892815040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367305 (or 5367295 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 46.

The spelling of 18892815040 in words is "eighteen billion, eight hundred ninety-two million, eight hundred fifteen thousand, forty".