18994086 has 24 divisors (see below), whose sum is σ = 41286024. Its totient is φ = 6311040.

The previous prime is 18994069. The next prime is 18994141. The reversal of 18994086 is 68049981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4726 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (1720251).

Almost surely, 2^18994086 is an apocalyptic number.

18994086 is an abundant number, since it is smaller than the sum of its proper divisors (22291938).

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

18994086 is a wasteful number, since it uses less digits than its factorization.

18994086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 18994086 is about 4358.2205084185. The cubic root of 18994086 is about 266.8124761617.

The spelling of 18994086 in words is "eighteen million, nine hundred ninety-four thousand, eighty-six".