18386574864 has 80 divisors (see below), whose sum is σ = 54311761920. Its totient is φ = 5250637440.

The previous prime is 18386574851. The next prime is 18386574883. The reversal of 18386574864 is 46847568381.

It is a super-2 number, since 2×18386574864² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18386574798 and 18386574807.

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, 703177 + ... + 728855.

It is an arithmetic number, because the mean of its divisors is an integer number (678897024).

Almost surely, 2^18386574864 is an apocalyptic number.

18386574864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18386574864 is an abundant number, since it is smaller than the sum of its proper divisors (35925187056).

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

18386574864 is a wasteful number, since it uses less digits than its factorization.

18386574864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27828 (or 27822 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 60.

The spelling of 18386574864 in words is "eighteen billion, three hundred eighty-six million, five hundred seventy-four thousand, eight hundred sixty-four".