1597630939 has 2 divisors, whose sum is σ = 1597630940. Its totient is φ = 1597630938.

The previous prime is 1597630927. The next prime is 1597630963. The reversal of 1597630939 is 9390367951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1597630939 - 2²⁹ = 1060760027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1597630919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798815469 + 798815470.

It is an arithmetic number, because the mean of its divisors is an integer number (798815470).

Almost surely, 2^1597630939 is an apocalyptic number.

1597630939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1597630939 is an equidigital number, since it uses as much as digits as its factorization.

1597630939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1377810, while the sum is 52.

The square root of 1597630939 is about 39970.3757675607. The cubic root of 1597630939 is about 1169.0295454401.

The spelling of 1597630939 in words is "one billion, five hundred ninety-seven million, six hundred thirty thousand, nine hundred thirty-nine".