1597112639 has 8 divisors (see below), whose sum is σ = 1606044000. Its totient is φ = 1588198752.

The previous prime is 1597112623. The next prime is 1597112707. The reversal of 1597112639 is 9362117951.

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 1597112639 - 2⁴ = 1597112623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1597112639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597112239) 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, 206657 + ... + 214245.

It is an arithmetic number, because the mean of its divisors is an integer number (200755500).

Almost surely, 2^1597112639 is an apocalyptic number.

1597112639 is a deficient number, since it is larger than the sum of its proper divisors (8931361).

1597112639 is an equidigital number, since it uses as much as digits as its factorization.

1597112639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8737.

The product of its digits is 102060, while the sum is 44.

The square root of 1597112639 is about 39963.8916898742. The cubic root of 1597112639 is about 1168.9031137483.

The spelling of 1597112639 in words is "one billion, five hundred ninety-seven million, one hundred twelve thousand, six hundred thirty-nine".