8138162790 has 24 divisors (see below), whose sum is σ = 21159223488. Its totient is φ = 2170176720.

The previous prime is 8138162779. The next prime is 8138162827. The reversal of 8138162790 is 972618318.

8138162790 is a `hidden beast` number, since 8 + 13 + 8 + 1 + 627 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

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, 45211926 + ... + 45212105.

It is an arithmetic number, because the mean of its divisors is an integer number (881634312).

Almost surely, 2^8138162790 is an apocalyptic number.

8138162790 is an abundant number, since it is smaller than the sum of its proper divisors (13021060698).

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

8138162790 is a wasteful number, since it uses less digits than its factorization.

8138162790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90424044 (or 90424041 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8138162790 is about 90211.7663611571. The cubic root of 8138162790 is about 2011.4479134469.

The spelling of 8138162790 in words is "eight billion, one hundred thirty-eight million, one hundred sixty-two thousand, seven hundred ninety".