6490907831 has 2 divisors, whose sum is σ = 6490907832. Its totient is φ = 6490907830.

The previous prime is 6490907791. The next prime is 6490907953. The reversal of 6490907831 is 1387090946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6490907831 - 2⁶ = 6490907767 is a prime.

It is a super-2 number, since 2×6490907831² = 84263768941074249122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6490907531) 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, 3245453915 + 3245453916.

It is an arithmetic number, because the mean of its divisors is an integer number (3245453916).

Almost surely, 2^6490907831 is an apocalyptic number.

6490907831 is a deficient number, since it is larger than the sum of its proper divisors (1).

6490907831 is an equidigital number, since it uses as much as digits as its factorization.

6490907831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 6490907831 is about 80566.1705121945. The cubic root of 6490907831 is about 1865.3850025624.

The spelling of 6490907831 in words is "six billion, four hundred ninety million, nine hundred seven thousand, eight hundred thirty-one".