1597431269 has 8 divisors (see below), whose sum is σ = 1826183808. Its totient is φ = 1368815760.

The previous prime is 1597431257. The next prime is 1597431301. The reversal of 1597431269 is 9621347951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1597431269 - 2²⁰ = 1596382693 is a prime.

It is a super-2 number, since 2×1597431269² = 5103573318357900722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597430269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7922 + ... + 57075.

It is an arithmetic number, because the mean of its divisors is an integer number (228272976).

Almost surely, 2^1597431269 is an apocalyptic number.

It is an amenable number.

1597431269 is a deficient number, since it is larger than the sum of its proper divisors (228752539).

1597431269 is an equidigital number, since it uses as much as digits as its factorization.

1597431269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68515.

The product of its digits is 408240, while the sum is 47.

The square root of 1597431269 is about 39967.8779646856. The cubic root of 1597431269 is about 1168.9808421073.

The spelling of 1597431269 in words is "one billion, five hundred ninety-seven million, four hundred thirty-one thousand, two hundred sixty-nine".