18394966 has 8 divisors (see below), whose sum is σ = 28482624. Its totient is φ = 8900760.

The previous prime is 18394951. The next prime is 18394967. The reversal of 18394966 is 66949381.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18394967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148285 + ... + 148408.

It is an arithmetic number, because the mean of its divisors is an integer number (3560328).

Almost surely, 2^18394966 is an apocalyptic number.

18394966 is a deficient number, since it is larger than the sum of its proper divisors (10087658).

18394966 is a wasteful number, since it uses less digits than its factorization.

18394966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296726.

The product of its digits is 279936, while the sum is 46.

The square root of 18394966 is about 4288.9352991156. The cubic root of 18394966 is about 263.9771463994.

The spelling of 18394966 in words is "eighteen million, three hundred ninety-four thousand, nine hundred sixty-six".