18898878880 has 48 divisors (see below), whose sum is σ = 51026976000. Its totient is φ = 6479615232.

The previous prime is 18898878863. The next prime is 18898878893. The reversal of 18898878880 is 8887889881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8435880 + ... + 8438119.

It is an arithmetic number, because the mean of its divisors is an integer number (1063062000).

Almost surely, 2^18898878880 is an apocalyptic number.

18898878880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18898878880 is an abundant number, since it is smaller than the sum of its proper divisors (32128097120).

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

18898878880 is a wasteful number, since it uses less digits than its factorization.

18898878880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16874021 (or 16874013 counting only the distinct ones).

The product of its (nonzero) digits is 132120576, while the sum is 73.

It can be divided in two parts, 18 and 898878880, that added together give a palindrome (898878898).

The spelling of 18898878880 in words is "eighteen billion, eight hundred ninety-eight million, eight hundred seventy-eight thousand, eight hundred eighty".