6480641819 has 2 divisors, whose sum is σ = 6480641820. Its totient is φ = 6480641818.

The previous prime is 6480641813. The next prime is 6480641903. The reversal of 6480641819 is 9181460846.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6480641819 is a prime.

It is a super-2 number, since 2×6480641819² = 83997436772343257522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6480641813) 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, 3240320909 + 3240320910.

It is an arithmetic number, because the mean of its divisors is an integer number (3240320910).

Almost surely, 2^6480641819 is an apocalyptic number.

6480641819 is a deficient number, since it is larger than the sum of its proper divisors (1).

6480641819 is an equidigital number, since it uses as much as digits as its factorization.

6480641819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 6480641819 is about 80502.4336215993. The cubic root of 6480641819 is about 1864.4010534187.

The spelling of 6480641819 in words is "six billion, four hundred eighty million, six hundred forty-one thousand, eight hundred nineteen".