6368502649 has 2 divisors, whose sum is σ = 6368502650. Its totient is φ = 6368502648.

The previous prime is 6368502619. The next prime is 6368502727. The reversal of 6368502649 is 9462058636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4890484624 + 1478018025 = 69932^2 + 38445^2 .

It is a cyclic number.

It is not a de Polignac number, because 6368502649 - 2⁷ = 6368502521 is a prime.

It is not a weakly prime, because it can be changed into another prime (6368502619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3184251324 + 3184251325.

It is an arithmetic number, because the mean of its divisors is an integer number (3184251325).

Almost surely, 2^6368502649 is an apocalyptic number.

It is an amenable number.

6368502649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6368502649 is an equidigital number, since it uses as much as digits as its factorization.

6368502649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The square root of 6368502649 is about 79802.8987506093. The cubic root of 6368502649 is about 1853.5847366511.

The spelling of 6368502649 in words is "six billion, three hundred sixty-eight million, five hundred two thousand, six hundred forty-nine".