18086117 has 8 divisors (see below), whose sum is σ = 21110016. Its totient is φ = 15172272.

The previous prime is 18086093. The next prime is 18086137. The reversal of 18086117 is 71168081.

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 18086117 - 2²⁰ = 17037541 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 (18086137) 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, 27158 + ... + 27815.

It is an arithmetic number, because the mean of its divisors is an integer number (2638752).

Almost surely, 2^18086117 is an apocalyptic number.

It is an amenable number.

18086117 is a deficient number, since it is larger than the sum of its proper divisors (3023899).

18086117 is an equidigital number, since it uses as much as digits as its factorization.

18086117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55027.

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

The square root of 18086117 is about 4252.7775629581. Note that the first 3 decimals coincide. The cubic root of 18086117 is about 262.4914198254.

The spelling of 18086117 in words is "eighteen million, eighty-six thousand, one hundred seventeen".