18764675720 has 64 divisors (see below), whose sum is σ = 49808563200. Its totient is φ = 6226064640.

The previous prime is 18764675687. The next prime is 18764675731. The reversal of 18764675720 is 2757646781.

It is a happy number.

It is a super-2 number, since 2×18764675720² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1072235 + ... + 1089594.

It is an arithmetic number, because the mean of its divisors is an integer number (778258800).

Almost surely, 2^18764675720 is an apocalyptic number.

18764675720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18764675720 is an abundant number, since it is smaller than the sum of its proper divisors (31043887480).

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

18764675720 is a wasteful number, since it uses less digits than its factorization.

18764675720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161878 (or 2161874 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 18764675720 in words is "eighteen billion, seven hundred sixty-four million, six hundred seventy-five thousand, seven hundred twenty".