6489104509 has 2 divisors, whose sum is σ = 6489104510. Its totient is φ = 6489104508.

The previous prime is 6489104443. The next prime is 6489104551. The reversal of 6489104509 is 9054019846.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6440062500 + 49042009 = 80250^2 + 7003^2 .

It is a cyclic number.

It is not a de Polignac number, because 6489104509 - 2⁷ = 6489104381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6484104509) 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, 3244552254 + 3244552255.

It is an arithmetic number, because the mean of its divisors is an integer number (3244552255).

Almost surely, 2^6489104509 is an apocalyptic number.

It is an amenable number.

6489104509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6489104509 is an equidigital number, since it uses as much as digits as its factorization.

6489104509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 6489104509 is about 80554.9781763983. The cubic root of 6489104509 is about 1865.2122377520.

The spelling of 6489104509 in words is "six billion, four hundred eighty-nine million, one hundred four thousand, five hundred nine".