128359613 has 2 divisors, whose sum is σ = 128359614. Its totient is φ = 128359612.

The previous prime is 128359591. The next prime is 128359657. The reversal of 128359613 is 316953821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115842169 + 12517444 = 10763^2 + 3538^2 .

It is a cyclic number.

It is not a de Polignac number, because 128359613 - 2¹⁰ = 128358589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128359663) 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, 64179806 + 64179807.

It is an arithmetic number, because the mean of its divisors is an integer number (64179807).

Almost surely, 2^128359613 is an apocalyptic number.

It is an amenable number.

128359613 is a deficient number, since it is larger than the sum of its proper divisors (1).

128359613 is an equidigital number, since it uses as much as digits as its factorization.

128359613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 128359613 is about 11329.5901514574. The cubic root of 128359613 is about 504.4399411454.

The spelling of 128359613 in words is "one hundred twenty-eight million, three hundred fifty-nine thousand, six hundred thirteen".