6499456919 has 2 divisors, whose sum is σ = 6499456920. Its totient is φ = 6499456918.

The previous prime is 6499456903. The next prime is 6499456987. The reversal of 6499456919 is 9196549946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6499456919 - 2⁴ = 6499456903 is a prime.

It is a super-2 number, since 2×6499456919² = 84485880483873945122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6499456819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249728459 + 3249728460.

It is an arithmetic number, because the mean of its divisors is an integer number (3249728460).

Almost surely, 2^6499456919 is an apocalyptic number.

6499456919 is a deficient number, since it is larger than the sum of its proper divisors (1).

6499456919 is an equidigital number, since it uses as much as digits as its factorization.

6499456919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18895680, while the sum is 62.

The square root of 6499456919 is about 80619.2093672470. The cubic root of 6499456919 is about 1866.2036011689.

The spelling of 6499456919 in words is "six billion, four hundred ninety-nine million, four hundred fifty-six thousand, nine hundred nineteen".