8138320192 has 28 divisors (see below), whose sum is σ = 16297653460. Its totient is φ = 4031824896.

The previous prime is 8138320171. The next prime is 8138320213. The reversal of 8138320192 is 2910238318.

It is an interprime number because it is at equal distance from previous prime (8138320171) and next prime (8138320213).

It can be written as a sum of positive squares in 2 ways, for example, as 3837059136 + 4301261056 = 61944^2 + 65584^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576333 + ... + 590284.

Almost surely, 2^8138320192 is an apocalyptic number.

It is an amenable number.

8138320192 is an abundant number, since it is smaller than the sum of its proper divisors (8159333268).

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

8138320192 is a wasteful number, since it uses less digits than its factorization.

8138320192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166738 (or 1166728 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 8138320192 is about 90212.6387597658. The cubic root of 8138320192 is about 2011.4608813158.

The spelling of 8138320192 in words is "eight billion, one hundred thirty-eight million, three hundred twenty thousand, one hundred ninety-two".