1597916741 has 2 divisors, whose sum is σ = 1597916742. Its totient is φ = 1597916740.

The previous prime is 1597916729. The next prime is 1597916797. The reversal of 1597916741 is 1476197951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108224100 + 489692641 = 33290^2 + 22129^2 .

It is a cyclic number.

It is not a de Polignac number, because 1597916741 - 2²⁶ = 1530807877 is a prime.

It is a super-2 number, since 2×1597916741² = 5106675822336122162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1597916741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1597916941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798958370 + 798958371.

It is an arithmetic number, because the mean of its divisors is an integer number (798958371).

Almost surely, 2^1597916741 is an apocalyptic number.

It is an amenable number.

1597916741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1597916741 is an equidigital number, since it uses as much as digits as its factorization.

1597916741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 50.

The square root of 1597916741 is about 39973.9507804770. The cubic root of 1597916741 is about 1169.0992509549.

The spelling of 1597916741 in words is "one billion, five hundred ninety-seven million, nine hundred sixteen thousand, seven hundred forty-one".