1993253 has 4 divisors (see below), whose sum is σ = 2013900. Its totient is φ = 1972608.

The previous prime is 1993247. The next prime is 1993259. The reversal of 1993253 is 3523991.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1993247) and next prime (1993259).

It can be written as a sum of positive squares in 2 ways, for example, as 1555009 + 438244 = 1247^2 + 662^2 .

It is a cyclic number.

It is not a de Polignac number, because 1993253 - 2⁴ = 1993237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10178 + ... + 10371.

It is an arithmetic number, because the mean of its divisors is an integer number (503475).

2^1993253 is an apocalyptic number.

It is an amenable number.

1993253 is a deficient number, since it is larger than the sum of its proper divisors (20647).

1993253 is an equidigital number, since it uses as much as digits as its factorization.

1993253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20646.

The product of its digits is 7290, while the sum is 32.

The square root of 1993253 is about 1411.8261224386. The cubic root of 1993253 is about 125.8502672511.

The spelling of 1993253 in words is "one million, nine hundred ninety-three thousand, two hundred fifty-three".