18086959 has 16 divisors (see below), whose sum is σ = 20238336. Its totient is φ = 16160760.

The previous prime is 18086941. The next prime is 18086983. The reversal of 18086959 is 95968081.

It is not a de Polignac number, because 18086959 - 2¹⁵ = 18054191 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 (18086989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142354 + ... + 142480.

It is an arithmetic number, because the mean of its divisors is an integer number (1264896).

Almost surely, 2^18086959 is an apocalyptic number.

18086959 is a deficient number, since it is larger than the sum of its proper divisors (2151377).

18086959 is a wasteful number, since it uses less digits than its factorization.

18086959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 18086959 is about 4252.8765559325. The cubic root of 18086959 is about 262.4954931955.

The spelling of 18086959 in words is "eighteen million, eighty-six thousand, nine hundred fifty-nine".