18107418 has 32 divisors (see below), whose sum is σ = 43568640. Its totient is φ = 4901040.

The previous prime is 18107351. The next prime is 18107443. The reversal of 18107418 is 81470181.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10548 + ... + 12143.

It is an arithmetic number, because the mean of its divisors is an integer number (1361520).

Almost surely, 2^18107418 is an apocalyptic number.

18107418 is an abundant number, since it is smaller than the sum of its proper divisors (25461222).

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

18107418 is a wasteful number, since it uses less digits than its factorization.

18107418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22722.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 18107418 is about 4255.2811892988. The cubic root of 18107418 is about 262.5944295187.

Adding to 18107418 its reverse (81470181), we get a palindrome (99577599).

The spelling of 18107418 in words is "eighteen million, one hundred seven thousand, four hundred eighteen".