6382691257 has 2 divisors, whose sum is σ = 6382691258. Its totient is φ = 6382691256.

The previous prime is 6382691239. The next prime is 6382691267. The reversal of 6382691257 is 7521962836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6325975296 + 56715961 = 79536^2 + 7531^2 .

It is a cyclic number.

It is not a de Polignac number, because 6382691257 - 2⁷ = 6382691129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6382691257.

It is not a weakly prime, because it can be changed into another prime (6382691267) 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, 3191345628 + 3191345629.

It is an arithmetic number, because the mean of its divisors is an integer number (3191345629).

Almost surely, 2^6382691257 is an apocalyptic number.

It is an amenable number.

6382691257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6382691257 is an equidigital number, since it uses as much as digits as its factorization.

6382691257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The square root of 6382691257 is about 79891.7471144548. The cubic root of 6382691257 is about 1854.9602708705.

The spelling of 6382691257 in words is "six billion, three hundred eighty-two million, six hundred ninety-one thousand, two hundred fifty-seven".