6459993643 has 2 divisors, whose sum is σ = 6459993644. Its totient is φ = 6459993642.

The previous prime is 6459993623. The next prime is 6459993649. The reversal of 6459993643 is 3463999546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6459993643 - 2⁵ = 6459993611 is a prime.

It is a super-2 number, since 2×6459993643² = 83463035735200822898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6459993649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229996821 + 3229996822.

It is an arithmetic number, because the mean of its divisors is an integer number (3229996822).

Almost surely, 2^6459993643 is an apocalyptic number.

6459993643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6459993643 is an equidigital number, since it uses as much as digits as its factorization.

6459993643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18895680, while the sum is 58.

The square root of 6459993643 is about 80374.0856433216. The cubic root of 6459993643 is about 1862.4188712195.

The spelling of 6459993643 in words is "six billion, four hundred fifty-nine million, nine hundred ninety-three thousand, six hundred forty-three".