6395813689 has 2 divisors, whose sum is σ = 6395813690. Its totient is φ = 6395813688.

The previous prime is 6395813663. The next prime is 6395813741. The reversal of 6395813689 is 9863185936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4291298064 + 2104515625 = 65508^2 + 45875^2 .

It is a cyclic number.

It is not a de Polignac number, because 6395813689 - 2⁵ = 6395813657 is a prime.

It is not a weakly prime, because it can be changed into another prime (6395813609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197906844 + 3197906845.

It is an arithmetic number, because the mean of its divisors is an integer number (3197906845).

Almost surely, 2^6395813689 is an apocalyptic number.

It is an amenable number.

6395813689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6395813689 is an equidigital number, since it uses as much as digits as its factorization.

6395813689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 58.

The square root of 6395813689 is about 79973.8312762369. The cubic root of 6395813689 is about 1856.2306298485.

The spelling of 6395813689 in words is "six billion, three hundred ninety-five million, eight hundred thirteen thousand, six hundred eighty-nine".