8138618 has 8 divisors (see below), whose sum is σ = 12628980. Its totient is φ = 3928960.

The previous prime is 8138579. The next prime is 8138629. The reversal of 8138618 is 8168318.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7991929 + 146689 = 2827^2 + 383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 70103 + ... + 70218.

Almost surely, 2^8138618 is an apocalyptic number.

8138618 is a deficient number, since it is larger than the sum of its proper divisors (4490362).

8138618 is a wasteful number, since it uses less digits than its factorization.

8138618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140352.

The product of its digits is 9216, while the sum is 35.

The square root of 8138618 is about 2852.8263178820. The cubic root of 8138618 is about 201.1485416348.

The spelling of 8138618 in words is "eight million, one hundred thirty-eight thousand, six hundred eighteen".