18085184 has 28 divisors (see below), whose sum is σ = 38650164. Its totient is φ = 8346624.

The previous prime is 18085163. The next prime is 18085189. The reversal of 18085184 is 48158081.

It can be written as a sum of positive squares in 2 ways, for example, as 1763584 + 16321600 = 1328^2 + 4040^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18085189) by changing a digit.

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, 10037 + ... + 11700.

It is an arithmetic number, because the mean of its divisors is an integer number (1380363).

Almost surely, 2^18085184 is an apocalyptic number.

It is an amenable number.

18085184 is an abundant number, since it is smaller than the sum of its proper divisors (20564980).

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

18085184 is a wasteful number, since it uses less digits than its factorization.

18085184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21762 (or 21752 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 18085184 is about 4252.6678685268. The cubic root of 18085184 is about 262.4869060740.

The spelling of 18085184 in words is "eighteen million, eighty-five thousand, one hundred eighty-four".