18808368880 has 80 divisors (see below), whose sum is σ = 52916345280. Its totient is φ = 6069252096.

The previous prime is 18808368877. The next prime is 18808368883. The reversal of 18808368880 is 8886380881.

It is an interprime number because it is at equal distance from previous prime (18808368877) and next prime (18808368883).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18808368883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978315 + ... + 997354.

It is an arithmetic number, because the mean of its divisors is an integer number (661454316).

Almost surely, 2^18808368880 is an apocalyptic number.

18808368880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18808368880 is an abundant number, since it is smaller than the sum of its proper divisors (34107976400).

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

18808368880 is a wasteful number, since it uses less digits than its factorization.

18808368880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975706 (or 1975700 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 58.

The spelling of 18808368880 in words is "eighteen billion, eight hundred eight million, three hundred sixty-eight thousand, eight hundred eighty".