Subtracting from 18090 its reverse (9081), we obtain a palindrome (9009).
18090 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.
18090 is strictly pandigital in base 6.
It is a plaindrome in base 16.
218090 is an apocalyptic number.
18090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 18090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18090 is a wasteful number, since it uses less digits than its factorization.
18090 is an odious number, because the sum of its binary digits is odd.
The square root of 18090 is about 134.4990706288. The cubic root of 18090 is about 26.2510203685.
The spelling of 18090 in words is "eighteen thousand, ninety".