1253100493 has 4 divisors (see below), whose sum is σ = 1253360160. Its totient is φ = 1252840828.

The previous prime is 1253100473. The next prime is 1253100517. The reversal of 1253100493 is 3940013521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1253100493 - 2⁵ = 1253100461 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 (1253100473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122455 + ... + 132292.

It is an arithmetic number, because the mean of its divisors is an integer number (313340040).

Almost surely, 2^1253100493 is an apocalyptic number.

It is an amenable number.

1253100493 is a deficient number, since it is larger than the sum of its proper divisors (259667).

1253100493 is an equidigital number, since it uses as much as digits as its factorization.

1253100493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259666.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1253100493 is about 35399.1594956716. The cubic root of 1253100493 is about 1078.1072509385.

The spelling of 1253100493 in words is "one billion, two hundred fifty-three million, one hundred thousand, four hundred ninety-three".