18324894 has 16 divisors (see below), whose sum is σ = 41885568. Its totient is φ = 5235672.

The previous prime is 18324893. The next prime is 18324913. The reversal of 18324894 is 49842381.

It is a super-2 number, since 2×18324894² = 671603480222472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18324893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218112 + ... + 218195.

It is an arithmetic number, because the mean of its divisors is an integer number (2617848).

Almost surely, 2^18324894 is an apocalyptic number.

18324894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18324894 is an abundant number, since it is smaller than the sum of its proper divisors (23560674).

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

18324894 is a wasteful number, since it uses less digits than its factorization.

18324894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436319.

The product of its digits is 55296, while the sum is 39.

The square root of 18324894 is about 4280.7585776355. The cubic root of 18324894 is about 263.6415302342.

The spelling of 18324894 in words is "eighteen million, three hundred twenty-four thousand, eight hundred ninety-four".