18974673536 has 64 divisors (see below), whose sum is σ = 46524468480. Its totient is φ = 7506459648.

The previous prime is 18974673521. The next prime is 18974673541. The reversal of 18974673536 is 63537647981.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802856 + ... + 826151.

It is an arithmetic number, because the mean of its divisors is an integer number (726944820).

Almost surely, 2^18974673536 is an apocalyptic number.

18974673536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18974673536 is an abundant number, since it is smaller than the sum of its proper divisors (27549794944).

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

18974673536 is a wasteful number, since it uses less digits than its factorization.

18974673536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629041 (or 1629029 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 59.

The spelling of 18974673536 in words is "eighteen billion, nine hundred seventy-four million, six hundred seventy-three thousand, five hundred thirty-six".