18084918 has 8 divisors (see below), whose sum is σ = 36169848. Its totient is φ = 6028304.

The previous prime is 18084851. The next prime is 18084919. The reversal of 18084918 is 81948081.

It is a happy number.

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

18084918 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18084919) 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, 1507071 + ... + 1507082.

It is an arithmetic number, because the mean of its divisors is an integer number (4521231).

Almost surely, 2^18084918 is an apocalyptic number.

18084918 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.

18084918 is a wasteful number, since it uses less digits than its factorization.

18084918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014158.

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

The square root of 18084918 is about 4252.6365939262. The cubic root of 18084918 is about 262.4856191668.

The spelling of 18084918 in words is "eighteen million, eighty-four thousand, nine hundred eighteen".