8638018 has 16 divisors (see below), whose sum is σ = 13697280. Its totient is φ = 4077216.

The previous prime is 8637991. The next prime is 8638033. The reversal of 8638018 is 8108368.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446 + ... + 4822.

It is an arithmetic number, because the mean of its divisors is an integer number (856080).

Almost surely, 2^8638018 is an apocalyptic number.

8638018 is a deficient number, since it is larger than the sum of its proper divisors (5059262).

8638018 is a wasteful number, since it uses less digits than its factorization.

8638018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 8638018 is about 2939.0505269559. The cubic root of 8638018 is about 205.1814217886.

The spelling of 8638018 in words is "eight million, six hundred thirty-eight thousand, eighteen".