Adding to 1982 its sum of digits (20), we get a palindrome (2002).
Subtracting 1982 from its reverse (2891), we obtain a palindrome (909).
1982 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
1982 is strictly pandigital in base 5.
It is a plaindrome in base 16.
It is a nialpdrome in base 7 and base 13.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 1982.
1982 is an equidigital number, since it uses as much as digits as its factorization.
1982 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 993.
The square root of 1982 is about 44.5196585791. The cubic root of 1982 is about 12.5612989042.
The spelling of 1982 in words is "one thousand, nine hundred eighty-two".