18189084 has 12 divisors (see below), whose sum is σ = 42441224. Its totient is φ = 6063024.

The previous prime is 18189077. The next prime is 18189097. The reversal of 18189084 is 48098181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757867 + ... + 757890.

Almost surely, 2^18189084 is an apocalyptic number.

It is an amenable number.

18189084 is an abundant number, since it is smaller than the sum of its proper divisors (24252140).

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

18189084 is a wasteful number, since it uses less digits than its factorization.

18189084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515764 (or 1515762 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 18189084 is about 4264.8662347136. The cubic root of 18189084 is about 262.9886119392.

The spelling of 18189084 in words is "eighteen million, one hundred eighty-nine thousand, eighty-four".