18481086 has 24 divisors (see below), whose sum is σ = 43123080. Its totient is φ = 5686416.

The previous prime is 18481069. The next prime is 18481097. The reversal of 18481086 is 68018481.

It is a self number, because there is not a number n which added to its sum of digits gives 18481086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39256 + ... + 39723.

It is an arithmetic number, because the mean of its divisors is an integer number (1796795).

Almost surely, 2^18481086 is an apocalyptic number.

18481086 is an abundant number, since it is smaller than the sum of its proper divisors (24641994).

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

18481086 is a wasteful number, since it uses less digits than its factorization.

18481086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79000 (or 78997 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 18481086 is about 4298.9633634168. The cubic root of 18481086 is about 264.3884604920.

The spelling of 18481086 in words is "eighteen million, four hundred eighty-one thousand, eighty-six".