6499815163 has 2 divisors, whose sum is σ = 6499815164. Its totient is φ = 6499815162.

The previous prime is 6499815151. The next prime is 6499815247. The reversal of 6499815163 is 3615189946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6499815163 - 2⁵ = 6499815131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6499815163.

It is not a weakly prime, because it can be changed into another prime (6499815143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249907581 + 3249907582.

It is an arithmetic number, because the mean of its divisors is an integer number (3249907582).

Almost surely, 2^6499815163 is an apocalyptic number.

6499815163 is a deficient number, since it is larger than the sum of its proper divisors (1).

6499815163 is an equidigital number, since it uses as much as digits as its factorization.

6499815163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 52.

The square root of 6499815163 is about 80621.4311644243. The cubic root of 6499815163 is about 1866.2378883393.

The spelling of 6499815163 in words is "six billion, four hundred ninety-nine million, eight hundred fifteen thousand, one hundred sixty-three".