6449974313 has 2 divisors, whose sum is σ = 6449974314. Its totient is φ = 6449974312.

The previous prime is 6449974241. The next prime is 6449974331. The reversal of 6449974313 is 3134799446.

Together with next prime (6449974331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5474224144 + 975750169 = 73988^2 + 31237^2 .

It is a cyclic number.

It is not a de Polignac number, because 6449974313 - 2²⁰ = 6448925737 is a prime.

It is not a weakly prime, because it can be changed into another prime (6448974313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224987156 + 3224987157.

It is an arithmetic number, because the mean of its divisors is an integer number (3224987157).

Almost surely, 2^6449974313 is an apocalyptic number.

It is an amenable number.

6449974313 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449974313 is an equidigital number, since it uses as much as digits as its factorization.

6449974313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 50.

The square root of 6449974313 is about 80311.7321006091. The cubic root of 6449974313 is about 1861.4555139871.

The spelling of 6449974313 in words is "six billion, four hundred forty-nine million, nine hundred seventy-four thousand, three hundred thirteen".