18501870352 has 40 divisors (see below), whose sum is σ = 41840107776. Its totient is φ = 7760660736.

The previous prime is 18501870323. The next prime is 18501870379. The reversal of 18501870352 is 25307810581.

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, 1752133 + ... + 1762660.

Almost surely, 2^18501870352 is an apocalyptic number.

It is an amenable number.

18501870352 is an abundant number, since it is smaller than the sum of its proper divisors (23338237424).

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

18501870352 is a wasteful number, since it uses less digits than its factorization.

18501870352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514855 (or 3514849 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 18501870352 in words is "eighteen billion, five hundred one million, eight hundred seventy thousand, three hundred fifty-two".