7638888904 has 32 divisors (see below), whose sum is σ = 14501491200. Its totient is φ = 3771993600.

The previous prime is 7638888893. The next prime is 7638888913. The reversal of 7638888904 is 4098888367.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361429 + ... + 381979.

It is an arithmetic number, because the mean of its divisors is an integer number (453171600).

Almost surely, 2^7638888904 is an apocalyptic number.

It is an amenable number.

7638888904 is a deficient number, since it is larger than the sum of its proper divisors (6862602296).

7638888904 is a wasteful number, since it uses less digits than its factorization.

7638888904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21133 (or 21129 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 61.

The square root of 7638888904 is about 87400.7374339599. The cubic root of 7638888904 is about 1969.4429187445.

The spelling of 7638888904 in words is "seven billion, six hundred thirty-eight million, eight hundred eighty-eight thousand, nine hundred four".