1600949617 has 2 divisors, whose sum is σ = 1600949618. Its totient is φ = 1600949616.

The previous prime is 1600949587. The next prime is 1600949659. The reversal of 1600949617 is 7169490061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 961062001 + 639887616 = 31001^2 + 25296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1600949617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1600949717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800474808 + 800474809.

It is an arithmetic number, because the mean of its divisors is an integer number (800474809).

Almost surely, 2^1600949617 is an apocalyptic number.

It is an amenable number.

1600949617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600949617 is an equidigital number, since it uses as much as digits as its factorization.

1600949617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1600949617 is about 40011.8684517482. The cubic root of 1600949617 is about 1169.8384409352.

The spelling of 1600949617 in words is "one billion, six hundred million, nine hundred forty-nine thousand, six hundred seventeen".