6380931647 has 2 divisors, whose sum is σ = 6380931648. Its totient is φ = 6380931646.

The previous prime is 6380931643. The next prime is 6380931703. The reversal of 6380931647 is 7461390836.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6380931647 - 2² = 6380931643 is a prime.

It is a super-2 number, since 2×6380931647² = 81432577367372265218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6380931643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190465823 + 3190465824.

It is an arithmetic number, because the mean of its divisors is an integer number (3190465824).

Almost surely, 2^6380931647 is an apocalyptic number.

6380931647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6380931647 is an equidigital number, since it uses as much as digits as its factorization.

6380931647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 6380931647 is about 79880.7338912206. The cubic root of 6380931647 is about 1854.7897938464.

The spelling of 6380931647 in words is "six billion, three hundred eighty million, nine hundred thirty-one thousand, six hundred forty-seven".