18974417852 has 96 divisors (see below), whose sum is σ = 37260336960. Its totient is φ = 8399738880.

The previous prime is 18974417843. The next prime is 18974417881. The reversal of 18974417852 is 25871447981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24933152 + ... + 24933912.

It is an arithmetic number, because the mean of its divisors is an integer number (388128510).

Almost surely, 2^18974417852 is an apocalyptic number.

It is an amenable number.

18974417852 is a deficient number, since it is larger than the sum of its proper divisors (18285919108).

18974417852 is a wasteful number, since it uses less digits than its factorization.

18974417852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1021 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 56.

The spelling of 18974417852 in words is "eighteen billion, nine hundred seventy-four million, four hundred seventeen thousand, eight hundred fifty-two".