18086874 has 32 divisors (see below), whose sum is σ = 39118464. Its totient is φ = 5542080.

The previous prime is 18086837. The next prime is 18086881. The reversal of 18086874 is 47868081.

It is a super-2 number, since 2×18086874² = 654270022183752, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35707 + ... + 36209.

It is an arithmetic number, because the mean of its divisors is an integer number (1222452).

Almost surely, 2^18086874 is an apocalyptic number.

18086874 is an abundant number, since it is smaller than the sum of its proper divisors (21031590).

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

18086874 is a wasteful number, since it uses less digits than its factorization.

18086874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 18086874 is about 4252.8665626845. The cubic root of 18086874 is about 262.4950819940.

The spelling of 18086874 in words is "eighteen million, eighty-six thousand, eight hundred seventy-four".