It is a happy number.
2190 is nontrivially palindromic in base 9.
It is a plaindrome in base 16.
It is a nialpdrome in base 13.
It is a congruent number.
It is an unprimeable number.
2190 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2190 is a wasteful number, since it uses less digits than its factorization.
2190 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 83.
The square root of 2190 is about 46.7974358272. The cubic root of 2190 is about 12.9861786044.
The spelling of 2190 in words is "two thousand, one hundred ninety".