Adding to 2186 its reverse (6812), we get a palindrome (8998).
2186 is nontrivially palindromic in base 3.
2186 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
It is a Curzon number.
2186 is a nontrivial repdigit in base 3.
It is a plaindrome in base 3, base 9, base 15 and base 16.
It is a nialpdrome in base 3, base 5, base 13 and base 14.
It is a zygodrome in base 3.
It is an unprimeable number.
22186 is an apocalyptic number.
2186 is a wasteful number, since it uses less digits than its factorization.
2186 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1095.
The square root of 2186 is about 46.7546789102. The cubic root of 2186 is about 12.9782674367.
The spelling of 2186 in words is "two thousand, one hundred eighty-six".