638002585932 has 24 divisors (see below), whose sum is σ = 1488703566000. Its totient is φ = 212663119296.

The previous prime is 638002585931. The next prime is 638002586021. The reversal of 638002585932 is 239585200836.

It is not an unprimeable number, because it can be changed into a prime (638002585931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 80694 + ... + 1132482.

It is an arithmetic number, because the mean of its divisors is an integer number (62029315250).

Almost surely, 2^638002585932 is an apocalyptic number.

It is an amenable number.

638002585932 is an abundant number, since it is smaller than the sum of its proper divisors (850700980068).

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

638002585932 is a wasteful number, since it uses less digits than its factorization.

638002585932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102345 (or 1102343 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 638002585932 in words is "six hundred thirty-eight billion, two million, five hundred eighty-five thousand, nine hundred thirty-two".