9138618 has 24 divisors (see below), whose sum is σ = 20262528. Its totient is φ = 2975112.

The previous prime is 9138607. The next prime is 9138637. The reversal of 9138618 is 8168319.

9138618 is a `hidden beast` number, since 9 + 1 + 38 + 618 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5130 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (844272).

Almost surely, 2^9138618 is an apocalyptic number.

9138618 is an abundant number, since it is smaller than the sum of its proper divisors (11123910).

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

9138618 is a wasteful number, since it uses less digits than its factorization.

9138618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858 (or 11855 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 9138618 is about 3023.0147204405. The cubic root of 9138618 is about 209.0708611013.

Subtracting from 9138618 its reverse (8168319), we obtain a cube (970299 = 99³).

The spelling of 9138618 in words is "nine million, one hundred thirty-eight thousand, six hundred eighteen".