18974662971 has 32 divisors (see below), whose sum is σ = 27770999040. Its totient is φ = 11428569600.

The previous prime is 18974662943. The next prime is 18974662991. The reversal of 18974662971 is 17926647981.

It is not a de Polignac number, because 18974662971 - 2⁵ = 18974662939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18974662901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3790156 + ... + 3795158.

It is an arithmetic number, because the mean of its divisors is an integer number (867843720).

Almost surely, 2^18974662971 is an apocalyptic number.

18974662971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18974662971 is a deficient number, since it is larger than the sum of its proper divisors (8796336069).

18974662971 is a wasteful number, since it uses less digits than its factorization.

18974662971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707.

The product of its digits is 9144576, while the sum is 60.

The spelling of 18974662971 in words is "eighteen billion, nine hundred seventy-four million, six hundred sixty-two thousand, nine hundred seventy-one".