18194204 has 12 divisors (see below), whose sum is σ = 36388464. Its totient is φ = 7797504.

The previous prime is 18194177. The next prime is 18194207. The reversal of 18194204 is 40249181.

18194204 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18194207) 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, 324869 + ... + 324924.

It is an arithmetic number, because the mean of its divisors is an integer number (3032372).

Almost surely, 2^18194204 is an apocalyptic number.

18194204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18194204 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.

18194204 is a wasteful number, since it uses less digits than its factorization.

18194204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649804 (or 649802 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18194204 is about 4265.4664457712. The cubic root of 18194204 is about 263.0132856276.

The spelling of 18194204 in words is "eighteen million, one hundred ninety-four thousand, two hundred four".