6493504639 has 2 divisors, whose sum is σ = 6493504640. Its totient is φ = 6493504638.

The previous prime is 6493504597. The next prime is 6493504643. The reversal of 6493504639 is 9364053946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6493504639 - 2²⁷ = 6359286911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6493504592 and 6493504601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6493504649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3246752319 + 3246752320.

It is an arithmetic number, because the mean of its divisors is an integer number (3246752320).

Almost surely, 2^6493504639 is an apocalyptic number.

6493504639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6493504639 is an equidigital number, since it uses as much as digits as its factorization.

6493504639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 49.

The square root of 6493504639 is about 80582.2848956270. The cubic root of 6493504639 is about 1865.6337300124.

The spelling of 6493504639 in words is "six billion, four hundred ninety-three million, five hundred four thousand, six hundred thirty-nine".