5649849817 has 2 divisors, whose sum is σ = 5649849818. Its totient is φ = 5649849816.

The previous prime is 5649849811. The next prime is 5649849827. The reversal of 5649849817 is 7189489465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5032625481 + 617224336 = 70941^2 + 24844^2 .

It is a cyclic number.

It is not a de Polignac number, because 5649849817 - 2³ = 5649849809 is a prime.

It is not a weakly prime, because it can be changed into another prime (5649849811) 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, 2824924908 + 2824924909.

It is an arithmetic number, because the mean of its divisors is an integer number (2824924909).

Almost surely, 2^5649849817 is an apocalyptic number.

It is an amenable number.

5649849817 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649849817 is an equidigital number, since it uses as much as digits as its factorization.

5649849817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 61.

The square root of 5649849817 is about 75165.4828827701. The cubic root of 5649849817 is about 1781.0617132063.

The spelling of 5649849817 in words is "five billion, six hundred forty-nine million, eight hundred forty-nine thousand, eight hundred seventeen".