6490907791 has 2 divisors, whose sum is σ = 6490907792. Its totient is φ = 6490907790.

The previous prime is 6490907783. The next prime is 6490907831. The reversal of 6490907791 is 1977090946.

6490907791 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6490907791 - 2³ = 6490907783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6490907701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245453895 + 3245453896.

It is an arithmetic number, because the mean of its divisors is an integer number (3245453896).

Almost surely, 2^6490907791 is an apocalyptic number.

6490907791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6490907791 is an equidigital number, since it uses as much as digits as its factorization.

6490907791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 6490907791 is about 80566.1702639514. The cubic root of 6490907791 is about 1865.3849987306.

The spelling of 6490907791 in words is "six billion, four hundred ninety million, nine hundred seven thousand, seven hundred ninety-one".