8642706338 has 18 divisors (see below), whose sum is σ = 15082246683. Its totient is φ = 3703622580.

The previous prime is 8642706329. The next prime is 8642706367. The reversal of 8642706338 is 8336072468.

It can be written as a sum of positive squares in only one way, i.e., 4321353169 + 4321353169 = 65737^2 + 65737^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=65737.

It is a junction number, because it is equal to n+sod(n) for n = 8642706292 and 8642706301.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 915623 + ... + 925013.

Almost surely, 2^8642706338 is an apocalyptic number.

8642706338 is a deficient number, since it is larger than the sum of its proper divisors (6439540345).

8642706338 is an frugal number, since it uses more digits than its factorization.

8642706338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18798 (or 9400 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 8642706338 is about 92966.1569497201. The cubic root of 8642706338 is about 2052.1853623906.

The spelling of 8642706338 in words is "eight billion, six hundred forty-two million, seven hundred six thousand, three hundred thirty-eight".