6408589813 has 2 divisors, whose sum is σ = 6408589814. Its totient is φ = 6408589812.

The previous prime is 6408589801. The next prime is 6408589849. The reversal of 6408589813 is 3189858046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5564861604 + 843728209 = 74598^2 + 29047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6408589813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6408589513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204294906 + 3204294907.

It is an arithmetic number, because the mean of its divisors is an integer number (3204294907).

Almost surely, 2^6408589813 is an apocalyptic number.

It is an amenable number.

6408589813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6408589813 is an equidigital number, since it uses as much as digits as its factorization.

6408589813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 6408589813 is about 80053.6683294401. The cubic root of 6408589813 is about 1857.4657950272.

The spelling of 6408589813 in words is "six billion, four hundred eight million, five hundred eighty-nine thousand, eight hundred thirteen".