18086384 has 20 divisors (see below), whose sum is σ = 35313960. Its totient is φ = 8973120.

The previous prime is 18086357. The next prime is 18086417. The reversal of 18086384 is 48368081.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219 + ... + 6410.

It is an arithmetic number, because the mean of its divisors is an integer number (1765698).

Almost surely, 2^18086384 is an apocalyptic number.

It is an amenable number.

18086384 is a deficient number, since it is larger than the sum of its proper divisors (17227576).

18086384 is a wasteful number, since it uses less digits than its factorization.

18086384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768 (or 8762 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 18086384 is about 4252.8089540914. The cubic root of 18086384 is about 262.4927115134.

It can be divided in two parts, 1808 and 6384, that added together give a 13-th power (8192 = 2¹³).

The spelling of 18086384 in words is "eighteen million, eighty-six thousand, three hundred eighty-four".