18359136 has 84 divisors (see below), whose sum is σ = 54260892. Its totient is φ = 6111936.

The previous prime is 18359123. The next prime is 18359137. The reversal of 18359136 is 63195381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18359136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18359137) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 22935 + ... + 23721.

It is an arithmetic number, because the mean of its divisors is an integer number (645963).

Almost surely, 2^18359136 is an apocalyptic number.

18359136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18359136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27130446).

18359136 is an abundant number, since it is smaller than the sum of its proper divisors (35901756).

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

18359136 is an frugal number, since it uses more digits than its factorization.

18359136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 792 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 18359136 is about 4284.7562357735. The cubic root of 18359136 is about 263.8056420719.

It can be divided in two parts, 183 and 59136, that added together give a cube (59319 = 39³).

The spelling of 18359136 in words is "eighteen million, three hundred fifty-nine thousand, one hundred thirty-six".