2493 has 6 divisors (see below), whose sum is σ = 3614.
Its totient is φ = 1656.
The previous prime is 2477. The next prime is 2503. The reversal of 2493 is 3942.
It can be divided in two parts, 249 and 3, that multiplied together give a palindrome (747).
It can be written as a sum of positive squares in only one way, i.e., 1764 + 729 = 42^2 + 27^2
It is not a de Polignac number, because 2493 - 24 = 2477 is a prime.
It is a Duffinian number.
It is a Curzon number.
2493 is a lucky number.
It is a plaindrome in base 13 and base 16.
It is a nialpdrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2423) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130 + ... + 147.
22493 is an apocalyptic number.
It is an amenable number.
2493 is a deficient number, since it is larger than the sum of its proper divisors (1121).
2493 is a wasteful number, since it uses less digits than its factorization.
2493 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 283 (or 280 counting only the distinct ones).
The product of its digits is 216, while the sum is 18.
The square root of 2493 is about 49.9299509313.
The cubic root of 2493 is about 13.5594089595.
The spelling of 2493 in words is "two thousand, four hundred ninety-three".