9218139804 has 72 divisors (see below), whose sum is σ = 23555291760. Its totient is φ = 3039397632.

The previous prime is 9218139797. The next prime is 9218139817. The reversal of 9218139804 is 4089318129.

It is a self number, because there is not a number n which added to its sum of digits gives 9218139804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1441887 + ... + 1448265.

It is an arithmetic number, because the mean of its divisors is an integer number (327156830).

Almost surely, 2^9218139804 is an apocalyptic number.

It is an amenable number.

9218139804 is an abundant number, since it is smaller than the sum of its proper divisors (14337151956).

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

9218139804 is a wasteful number, since it uses less digits than its factorization.

9218139804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6819 (or 6814 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 9218139804 is about 96011.1441656644. The cubic root of 9218139804 is about 2096.7553676517.

The spelling of 9218139804 in words is "nine billion, two hundred eighteen million, one hundred thirty-nine thousand, eight hundred four".