9679512138 has 16 divisors (see below), whose sum is σ = 19546977216. Its totient is φ = 3195178560.

The previous prime is 9679512131. The next prime is 9679512151. The reversal of 9679512138 is 8312159769.

It is not an unprimeable number, because it can be changed into a prime (9679512131) by changing a digit.

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, 7830703 + ... + 7831938.

It is an arithmetic number, because the mean of its divisors is an integer number (1221686076).

Almost surely, 2^9679512138 is an apocalyptic number.

9679512138 is an abundant number, since it is smaller than the sum of its proper divisors (9867465078).

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

9679512138 is a wasteful number, since it uses less digits than its factorization.

9679512138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15662749.

The product of its digits is 816480, while the sum is 51.

The square root of 9679512138 is about 98384.5116773977. The cubic root of 9679512138 is about 2131.1686694304.

The spelling of 9679512138 in words is "nine billion, six hundred seventy-nine million, five hundred twelve thousand, one hundred thirty-eight".