1493 has 2 divisors, whose sum is σ = 1494.
Its totient is φ = 1492.
The previous prime is 1489. The next prime is 1499. The reversal of 1493 is 3941.
1493 is nontrivially palindromic in base 16.
1493 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1444 + 49 = 38^2 + 7^2
It is a cyclic number.
It is not a de Polignac number, because 1493 - 22 = 1489 is a prime.
1493 is an undulating number in base 16.
It is a plaindrome in base 11, base 13 and base 14.
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 1493.
It is not a weakly prime, because it can be changed into another prime (1499) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746 + 747.
It is an arithmetic number, because the mean of its divisors is an integer number (747).
21493 is an apocalyptic number.
It is an amenable number.
1493 is a deficient number, since it is larger than the sum of its proper divisors (1).
1493 is an equidigital number, since it uses as much as digits as its factorization.
1493 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 108, while the sum is 17.
The square root of 1493 is about 38.6393581727.
The cubic root of 1493 is about 11.4293079882.
It can be divided in two parts, 1 and 493, that added together give a palindrome (494).
The spelling of 1493 in words is "one thousand, four hundred ninety-three".