9638975686 has 16 divisors (see below), whose sum is σ = 14499072000. Its totient is φ = 4805966088.

The previous prime is 9638975657. The next prime is 9638975737. The reversal of 9638975686 is 6865798369.

It is a congruent number.

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, 2219305 + ... + 2223643.

It is an arithmetic number, because the mean of its divisors is an integer number (906192000).

Almost surely, 2^9638975686 is an apocalyptic number.

9638975686 is a deficient number, since it is larger than the sum of its proper divisors (4860096314).

9638975686 is a wasteful number, since it uses less digits than its factorization.

9638975686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7203.

The product of its digits is 117573120, while the sum is 67.

The square root of 9638975686 is about 98178.2852060475. The cubic root of 9638975686 is about 2128.1894939973.

The spelling of 9638975686 in words is "nine billion, six hundred thirty-eight million, nine hundred seventy-five thousand, six hundred eighty-six".