It is a happy number.
2158 is digitally balanced in base 2, 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.
It is a nialpdrome in base 13.
It is a congruent number.
2158 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
22158 is an apocalyptic number.
2158 is a wasteful number, since it uses less digits than its factorization.
2158 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 98.
The square root of 2158 is about 46.4542785973. The cubic root of 2158 is about 12.9226172143.
The spelling of 2158 in words is "two thousand, one hundred fifty-eight".