18136326 has 32 divisors (see below), whose sum is σ = 39338208. Its totient is φ = 5541120.

The previous prime is 18136319. The next prime is 18136357. The reversal of 18136326 is 62363181.

It is a junction number, because it is equal to n+sod(n) for n = 18136293 and 18136302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11506 + ... + 12986.

It is an arithmetic number, because the mean of its divisors is an integer number (1229319).

Almost surely, 2^18136326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18136326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19669104).

18136326 is an abundant number, since it is smaller than the sum of its proper divisors (21201882).

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

18136326 is a wasteful number, since it uses less digits than its factorization.

18136326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

The product of its digits is 5184, while the sum is 30.

The square root of 18136326 is about 4258.6765549875. The cubic root of 18136326 is about 262.7340968399.

The spelling of 18136326 in words is "eighteen million, one hundred thirty-six thousand, three hundred twenty-six".