18086394 has 8 divisors (see below), whose sum is σ = 36172800. Its totient is φ = 6028796.

The previous prime is 18086357. The next prime is 18086417. The reversal of 18086394 is 49368081.

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

18086394 is an admirable 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, 1507194 + ... + 1507205.

It is an arithmetic number, because the mean of its divisors is an integer number (4521600).

Almost surely, 2^18086394 is an apocalyptic number.

18086394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18086394 is a wasteful number, since it uses less digits than its factorization.

18086394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014404.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 18086394 is about 4252.8101297848. The cubic root of 18086394 is about 262.4927598910.

The spelling of 18086394 in words is "eighteen million, eighty-six thousand, three hundred ninety-four".