6499051609 has 2 divisors, whose sum is σ = 6499051610. Its totient is φ = 6499051608.

The previous prime is 6499051589. The next prime is 6499051633. The reversal of 6499051609 is 9061509946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6152049225 + 347002384 = 78435^2 + 18628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6499051609 is a prime.

It is not a weakly prime, because it can be changed into another prime (6499051679) 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, 3249525804 + 3249525805.

It is an arithmetic number, because the mean of its divisors is an integer number (3249525805).

Almost surely, 2^6499051609 is an apocalyptic number.

It is an amenable number.

6499051609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6499051609 is an equidigital number, since it uses as much as digits as its factorization.

6499051609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 6499051609 is about 80616.6955971280. The cubic root of 6499051609 is about 1866.1648078403.

The spelling of 6499051609 in words is "six billion, four hundred ninety-nine million, fifty-one thousand, six hundred nine".