18704153508 has 48 divisors (see below), whose sum is σ = 48642390720. Its totient is φ = 5559128064.

The previous prime is 18704153497. The next prime is 18704153537. The reversal of 18704153508 is 80535140781.

It is a self number, because there is not a number n which added to its sum of digits gives 18704153508.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2408941 + ... + 2416692.

It is an arithmetic number, because the mean of its divisors is an integer number (1013383140).

Almost surely, 2^18704153508 is an apocalyptic number.

It is an amenable number.

18704153508 is an abundant number, since it is smaller than the sum of its proper divisors (29938237212).

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

18704153508 is a wasteful number, since it uses less digits than its factorization.

18704153508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825676 (or 4825674 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 18704153508 in words is "eighteen billion, seven hundred four million, one hundred fifty-three thousand, five hundred eight".