1253730965 has 4 divisors (see below), whose sum is σ = 1504477164. Its totient is φ = 1002984768.

The previous prime is 1253730937. The next prime is 1253730991. The reversal of 1253730965 is 5690373521.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 179399236 + 1074331729 = 13394^2 + 32777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253730965 - 2²² = 1249536661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125373092 + ... + 125373101.

It is an arithmetic number, because the mean of its divisors is an integer number (376119291).

Almost surely, 2^1253730965 is an apocalyptic number.

It is an amenable number.

1253730965 is a deficient number, since it is larger than the sum of its proper divisors (250746199).

1253730965 is an equidigital number, since it uses as much as digits as its factorization.

1253730965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250746198.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 1253730965 is about 35408.0635590256. The cubic root of 1253730965 is about 1078.2880298612.

The spelling of 1253730965 in words is "one billion, two hundred fifty-three million, seven hundred thirty thousand, nine hundred sixty-five".