18357118 has 12 divisors (see below), whose sum is σ = 29817288. Its totient is φ = 8472360.

The previous prime is 18357113. The next prime is 18357149. The reversal of 18357118 is 81175381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18357113) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26818 + ... + 27493.

It is an arithmetic number, because the mean of its divisors is an integer number (2484774).

Almost surely, 2^18357118 is an apocalyptic number.

18357118 is a deficient number, since it is larger than the sum of its proper divisors (11460170).

18357118 is a wasteful number, since it uses less digits than its factorization.

18357118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54339 (or 54326 counting only the distinct ones).

The product of its digits is 6720, while the sum is 34.

The square root of 18357118 is about 4284.5207433271. The cubic root of 18357118 is about 263.7959760526.

The spelling of 18357118 in words is "eighteen million, three hundred fifty-seven thousand, one hundred eighteen".