1328296253 has 18 divisors (see below), whose sum is σ = 1408766394. Its totient is φ = 1252305472.

The previous prime is 1328296243. The next prime is 1328296261. The reversal of 1328296253 is 3526928231.

It can be written as a sum of positive squares in 3 ways, for example, as 59013124 + 1269283129 = 7682^2 + 35627^2 .

It is not a de Polignac number, because 1328296253 - 2⁴ = 1328296237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328296253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328296223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4190051 + ... + 4190367.

Almost surely, 2^1328296253 is an apocalyptic number.

It is an amenable number.

1328296253 is a deficient number, since it is larger than the sum of its proper divisors (80470141).

1328296253 is an frugal number, since it uses more digits than its factorization.

1328296253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 429 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 1328296253 is about 36445.7988388237. The cubic root of 1328296253 is about 1099.2546612026.

The spelling of 1328296253 in words is "one billion, three hundred twenty-eight million, two hundred ninety-six thousand, two hundred fifty-three".