9138923802 has 24 divisors (see below), whose sum is σ = 19803865536. Its totient is φ = 3045867336.

The previous prime is 9138923747. The next prime is 9138923831. The reversal of 9138923802 is 2083298319.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106233 + ... + 171939.

It is an arithmetic number, because the mean of its divisors is an integer number (825161064).

Almost surely, 2^9138923802 is an apocalyptic number.

9138923802 is an abundant number, since it is smaller than the sum of its proper divisors (10664941734).

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

9138923802 is a wasteful number, since it uses less digits than its factorization.

9138923802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73442 (or 73439 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 9138923802 is about 95597.7186024855. The cubic root of 9138923802 is about 2090.7319309406.

The spelling of 9138923802 in words is "nine billion, one hundred thirty-eight million, nine hundred twenty-three thousand, eight hundred two".