3638913884 has 12 divisors (see below), whose sum is σ = 6371872584. Its totient is φ = 1818378864.

The previous prime is 3638913857. The next prime is 3638913893. The reversal of 3638913884 is 4883198363.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261902 + ... + 275445.

It is an arithmetic number, because the mean of its divisors is an integer number (530989382).

Almost surely, 2^3638913884 is an apocalyptic number.

It is an amenable number.

3638913884 is a deficient number, since it is larger than the sum of its proper divisors (2732958700).

3638913884 is a wasteful number, since it uses less digits than its factorization.

3638913884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539044 (or 539042 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The square root of 3638913884 is about 60323.4107457461. The cubic root of 3638913884 is about 1538.1213224077.

The spelling of 3638913884 in words is "three billion, six hundred thirty-eight million, nine hundred thirteen thousand, eight hundred eighty-four".