18046218 has 16 divisors (see below), whose sum is σ = 36444096. Its totient is φ = 5956800.

The previous prime is 18046211. The next prime is 18046229. The reversal of 18046218 is 81264081.

It is not an unprimeable number, because it can be changed into a prime (18046211) 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 7 ways as a sum of consecutive naturals, for example, 13983 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (2277756).

Almost surely, 2^18046218 is an apocalyptic number.

18046218 is an abundant number, since it is smaller than the sum of its proper divisors (18397878).

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

18046218 is a wasteful number, since it uses less digits than its factorization.

18046218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29309.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 18046218 is about 4248.0840387167. The cubic root of 18046218 is about 262.2982540570.

The spelling of 18046218 in words is "eighteen million, forty-six thousand, two hundred eighteen".