18165678674 has 16 divisors (see below), whose sum is σ = 32012245440. Its totient is φ = 7621962960.

The previous prime is 18165678637. The next prime is 18165678683. The reversal of 18165678674 is 47687656181.

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, 31757894 + ... + 31758465.

It is an arithmetic number, because the mean of its divisors is an integer number (2000765340).

Almost surely, 2^18165678674 is an apocalyptic number.

18165678674 is a deficient number, since it is larger than the sum of its proper divisors (13846566766).

18165678674 is a wasteful number, since it uses less digits than its factorization.

18165678674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63516385.

The product of its digits is 13547520, while the sum is 59.

The spelling of 18165678674 in words is "eighteen billion, one hundred sixty-five million, six hundred seventy-eight thousand, six hundred seventy-four".