1986 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
1986 is an admirable number.
1986 is strictly pandigital in base 5.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 1986.
1986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
1986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1986 is a wasteful number, since it uses less digits than its factorization.
1986 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 336.
The square root of 1986 is about 44.5645599103. The cubic root of 1986 is about 12.5697434774.
The spelling of 1986 in words is "one thousand, nine hundred eighty-six".