8138658508 has 12 divisors (see below), whose sum is σ = 14244736912. Its totient is φ = 4068733680.

The previous prime is 8138658487. The next prime is 8138658511. The reversal of 8138658508 is 8058568318.

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, 117408 + ... + 173383.

Almost surely, 2^8138658508 is an apocalyptic number.

It is an amenable number.

8138658508 is a deficient number, since it is larger than the sum of its proper divisors (6106078404).

8138658508 is a wasteful number, since it uses less digits than its factorization.

8138658508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297792 (or 297790 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 52.

The square root of 8138658508 is about 90214.5138433944. The cubic root of 8138658508 is about 2011.4887535693.

The spelling of 8138658508 in words is "eight billion, one hundred thirty-eight million, six hundred fifty-eight thousand, five hundred eight".