18531718674 has 32 divisors (see below), whose sum is σ = 42400126080. Its totient is φ = 5289537792.

The previous prime is 18531718669. The next prime is 18531718691. The reversal of 18531718674 is 47681713581.

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, 175239 + ... + 260330.

It is an arithmetic number, because the mean of its divisors is an integer number (1325003940).

Almost surely, 2^18531718674 is an apocalyptic number.

18531718674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18531718674 is an abundant number, since it is smaller than the sum of its proper divisors (23868407406).

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

18531718674 is a wasteful number, since it uses less digits than its factorization.

18531718674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436594.

The product of its digits is 1128960, while the sum is 51.

The spelling of 18531718674 in words is "eighteen billion, five hundred thirty-one million, seven hundred eighteen thousand, six hundred seventy-four".