6449919163 has 2 divisors, whose sum is σ = 6449919164. Its totient is φ = 6449919162.

The previous prime is 6449919149. The next prime is 6449919251. The reversal of 6449919163 is 3619199446.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6449919163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6449919163.

It is not a weakly prime, because it can be changed into another prime (6449959163) 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, 3224959581 + 3224959582.

It is an arithmetic number, because the mean of its divisors is an integer number (3224959582).

Almost surely, 2^6449919163 is an apocalyptic number.

6449919163 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449919163 is an equidigital number, since it uses as much as digits as its factorization.

6449919163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 52.

The square root of 6449919163 is about 80311.3887502887. The cubic root of 6449919163 is about 1861.4502085622.

The spelling of 6449919163 in words is "six billion, four hundred forty-nine million, nine hundred nineteen thousand, one hundred sixty-three".