18516116 has 12 divisors (see below), whose sum is σ = 32443488. Its totient is φ = 9246552.

The previous prime is 18516097. The next prime is 18516131. The reversal of 18516116 is 61161581.

It is a congruent 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, 1475 + ... + 6261.

It is an arithmetic number, because the mean of its divisors is an integer number (2703624).

Almost surely, 2^18516116 is an apocalyptic number.

It is an amenable number.

18516116 is a deficient number, since it is larger than the sum of its proper divisors (13927372).

18516116 is a wasteful number, since it uses less digits than its factorization.

18516116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758 (or 5756 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 18516116 is about 4303.0356726386. The cubic root of 18516116 is about 264.5554002186. Note that the first 3 decimals are identical.

Adding to 18516116 its reverse (61161581), we get a palindrome (79677697).

The spelling of 18516116 in words is "eighteen million, five hundred sixteen thousand, one hundred sixteen".