128859613 has 2 divisors, whose sum is σ = 128859614. Its totient is φ = 128859612.

The previous prime is 128859607. The next prime is 128859667. The reversal of 128859613 is 316958821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116057529 + 12802084 = 10773^2 + 3578^2 .

It is a cyclic number.

It is not a de Polignac number, because 128859613 - 2⁵ = 128859581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128859613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128859113) 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, 64429806 + 64429807.

It is an arithmetic number, because the mean of its divisors is an integer number (64429807).

Almost surely, 2^128859613 is an apocalyptic number.

It is an amenable number.

128859613 is a deficient number, since it is larger than the sum of its proper divisors (1).

128859613 is an equidigital number, since it uses as much as digits as its factorization.

128859613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 43.

The square root of 128859613 is about 11351.6348161840. The cubic root of 128859613 is about 505.0940752099.

The spelling of 128859613 in words is "one hundred twenty-eight million, eight hundred fifty-nine thousand, six hundred thirteen".