1597020641 has 2 divisors, whose sum is σ = 1597020642. Its totient is φ = 1597020640.

The previous prime is 1597020611. The next prime is 1597020671. The reversal of 1597020641 is 1460207951.

It is a balanced prime because it is at equal distance from previous prime (1597020611) and next prime (1597020671).

It can be written as a sum of positive squares in only one way, i.e., 1573788241 + 23232400 = 39671^2 + 4820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1597020641 - 2¹⁰ = 1597019617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1597020611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798510320 + 798510321.

It is an arithmetic number, because the mean of its divisors is an integer number (798510321).

Almost surely, 2^1597020641 is an apocalyptic number.

It is an amenable number.

1597020641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1597020641 is an equidigital number, since it uses as much as digits as its factorization.

1597020641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1597020641 is about 39962.7406592691. The cubic root of 1597020641 is about 1168.8806693256.

The spelling of 1597020641 in words is "one billion, five hundred ninety-seven million, twenty thousand, six hundred forty-one".