18902311680 has 144 divisors (see below), whose sum is σ = 68993535744. Its totient is φ = 4320522240.

The previous prime is 18902311663. The next prime is 18902311739. The reversal of 18902311680 is 8611320981.

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 15 ways as a sum of consecutive naturals, for example, 324726 + ... + 378485.

It is an arithmetic number, because the mean of its divisors is an integer number (479121776).

Almost surely, 2^18902311680 is an apocalyptic number.

18902311680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18902311680 is an abundant number, since it is smaller than the sum of its proper divisors (50091224064).

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

18902311680 is an equidigital number, since it uses as much as digits as its factorization.

18902311680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703242 (or 703228 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 18902311680 in words is "eighteen billion, nine hundred two million, three hundred eleven thousand, six hundred eighty".