6428943529 has 2 divisors, whose sum is σ = 6428943530. Its totient is φ = 6428943528.

The previous prime is 6428943517. The next prime is 6428943539. The reversal of 6428943529 is 9253498246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3439587904 + 2989355625 = 58648^2 + 54675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6428943529 is a prime.

It is not a weakly prime, because it can be changed into another prime (6428943539) 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, 3214471764 + 3214471765.

It is an arithmetic number, because the mean of its divisors is an integer number (3214471765).

Almost surely, 2^6428943529 is an apocalyptic number.

It is an amenable number.

6428943529 is a deficient number, since it is larger than the sum of its proper divisors (1).

6428943529 is an equidigital number, since it uses as much as digits as its factorization.

6428943529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 52.

The square root of 6428943529 is about 80180.6929940120. The cubic root of 6428943529 is about 1859.4301573635.

The spelling of 6428943529 in words is "six billion, four hundred twenty-eight million, nine hundred forty-three thousand, five hundred twenty-nine".