18461118 has 16 divisors (see below), whose sum is σ = 39762576. Its totient is φ = 5680320.

The previous prime is 18461117. The next prime is 18461123. The reversal of 18461118 is 81116481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18461117) 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, 118263 + ... + 118418.

It is an arithmetic number, because the mean of its divisors is an integer number (2485161).

Almost surely, 2^18461118 is an apocalyptic number.

18461118 is an abundant number, since it is smaller than the sum of its proper divisors (21301458).

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

18461118 is a wasteful number, since it uses less digits than its factorization.

18461118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236699.

The product of its digits is 1536, while the sum is 30.

The square root of 18461118 is about 4296.6403154092. The cubic root of 18461118 is about 264.2932061461.

Adding to 18461118 its reverse (81116481), we get a palindrome (99577599).

The spelling of 18461118 in words is "eighteen million, four hundred sixty-one thousand, one hundred eighteen".