18132018 has 16 divisors (see below), whose sum is σ = 37514880. Its totient is φ = 5835536.

The previous prime is 18132007. The next prime is 18132019. The reversal of 18132018 is 81023181.

It is not an unprimeable number, because it can be changed into a prime (18132019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51930 + ... + 52277.

It is an arithmetic number, because the mean of its divisors is an integer number (2344680).

Almost surely, 2^18132018 is an apocalyptic number.

18132018 is an abundant number, since it is smaller than the sum of its proper divisors (19382862).

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

18132018 is a wasteful number, since it uses less digits than its factorization.

18132018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104241.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 18132018 is about 4258.1707340124. The cubic root of 18132018 is about 262.7132924036.

Adding to 18132018 its reverse (81023181), we get a palindrome (99155199).

The spelling of 18132018 in words is "eighteen million, one hundred thirty-two thousand, eighteen".