18994382 has 16 divisors (see below), whose sum is σ = 32085504. Its totient is φ = 8355000.

The previous prime is 18994379. The next prime is 18994399. The reversal of 18994382 is 28349981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13244 + ... + 14607.

It is an arithmetic number, because the mean of its divisors is an integer number (2005344).

Almost surely, 2^18994382 is an apocalyptic number.

18994382 is a deficient number, since it is larger than the sum of its proper divisors (13091122).

18994382 is a wasteful number, since it uses less digits than its factorization.

18994382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27895.

The product of its digits is 124416, while the sum is 44.

The square root of 18994382 is about 4358.2544671003. The cubic root of 18994382 is about 266.8138621384.

The spelling of 18994382 in words is "eighteen million, nine hundred ninety-four thousand, three hundred eighty-two".