18359118 has 24 divisors (see below), whose sum is σ = 39857688. Its totient is φ = 6107472.

The previous prime is 18359113. The next prime is 18359123. The reversal of 18359118 is 81195381.

It is an interprime number because it is at equal distance from previous prime (18359113) and next prime (18359123).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18359113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15205 + ... + 16367.

It is an arithmetic number, because the mean of its divisors is an integer number (1660737).

Almost surely, 2^18359118 is an apocalyptic number.

18359118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18359118 is an abundant number, since it is smaller than the sum of its proper divisors (21498570).

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

18359118 is a wasteful number, since it uses less digits than its factorization.

18359118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048 (or 2045 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 18359118 is about 4284.7541353034. The cubic root of 18359118 is about 263.8055558569.

The spelling of 18359118 in words is "eighteen million, three hundred fifty-nine thousand, one hundred eighteen".