18116562 has 16 divisors (see below), whose sum is σ = 36417600. Its totient is φ = 6008112.

The previous prime is 18116537. The next prime is 18116587. The reversal of 18116562 is 26561181.

It is an interprime number because it is at equal distance from previous prime (18116537) and next prime (18116587).

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 7 ways as a sum of consecutive naturals, for example, 6393 + ... + 8780.

It is an arithmetic number, because the mean of its divisors is an integer number (2276100).

Almost surely, 2^18116562 is an apocalyptic number.

18116562 is an abundant number, since it is smaller than the sum of its proper divisors (18301038).

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

18116562 is a wasteful number, since it uses less digits than its factorization.

18116562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15377.

The product of its digits is 2880, while the sum is 30.

The square root of 18116562 is about 4256.3554832744. The cubic root of 18116562 is about 262.6386242863.

The spelling of 18116562 in words is "eighteen million, one hundred sixteen thousand, five hundred sixty-two".