18931875952 has 40 divisors (see below), whose sum is σ = 40991095152. Its totient is φ = 8395507200.

The previous prime is 18931875887. The next prime is 18931875967. The reversal of 18931875952 is 25957813981.

It is a happy number.

It is a congruent number.

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, 1304583 + ... + 1319014.

Almost surely, 2^18931875952 is an apocalyptic number.

It is an amenable number.

18931875952 is an abundant number, since it is smaller than the sum of its proper divisors (22059219200).

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

18931875952 is a wasteful number, since it uses less digits than its factorization.

18931875952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623657 (or 2623651 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 58.

The spelling of 18931875952 in words is "eighteen billion, nine hundred thirty-one million, eight hundred seventy-five thousand, nine hundred fifty-two".