128619593 has 2 divisors, whose sum is σ = 128619594. Its totient is φ = 128619592.

The previous prime is 128619571. The next prime is 128619613. The reversal of 128619593 is 395916821.

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., 92775424 + 35844169 = 9632^2 + 5987^2 .

It is an emirp because it is prime and its reverse (395916821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128619593 - 2¹⁰ = 128618569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (128619563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64309796 + 64309797.

It is an arithmetic number, because the mean of its divisors is an integer number (64309797).

Almost surely, 2^128619593 is an apocalyptic number.

It is an amenable number.

128619593 is a deficient number, since it is larger than the sum of its proper divisors (1).

128619593 is an equidigital number, since it uses as much as digits as its factorization.

128619593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 128619593 is about 11341.0578430762. The cubic root of 128619593 is about 504.7802762718.

The spelling of 128619593 in words is "one hundred twenty-eight million, six hundred nineteen thousand, five hundred ninety-three".