18116087 has 8 divisors (see below), whose sum is σ = 19794432. Its totient is φ = 16443000.

The previous prime is 18116083. The next prime is 18116099. The reversal of 18116087 is 78061181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18116087 - 2² = 18116083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18116081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10778 + ... + 12344.

It is an arithmetic number, because the mean of its divisors is an integer number (2474304).

Almost surely, 2^18116087 is an apocalyptic number.

18116087 is a deficient number, since it is larger than the sum of its proper divisors (1678345).

18116087 is a wasteful number, since it uses less digits than its factorization.

18116087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 18116087 is about 4256.2996839978. The cubic root of 18116087 is about 262.6363288832.

The spelling of 18116087 in words is "eighteen million, one hundred sixteen thousand, eighty-seven".