9138072902 has 16 divisors (see below), whose sum is σ = 15765050400. Its totient is φ = 3891371328.

The previous prime is 9138072899. The next prime is 9138072919. The reversal of 9138072902 is 2092708319.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9138072902.

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, 2076527 + ... + 2080922.

It is an arithmetic number, because the mean of its divisors is an integer number (985315650).

Almost surely, 2^9138072902 is an apocalyptic number.

9138072902 is a deficient number, since it is larger than the sum of its proper divisors (6626977498).

9138072902 is a wasteful number, since it uses less digits than its factorization.

9138072902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157615.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 9138072902 is about 95593.2680788768. The cubic root of 9138072902 is about 2090.6670414980.

The spelling of 9138072902 in words is "nine billion, one hundred thirty-eight million, seventy-two thousand, nine hundred two".