128453189 has 2 divisors, whose sum is σ = 128453190. Its totient is φ = 128453188.

The previous prime is 128453153. The next prime is 128453191. The reversal of 128453189 is 981354821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116273089 + 12180100 = 10783^2 + 3490^2 .

It is an emirp because it is prime and its reverse (981354821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128453189 - 2²⁴ = 111675973 is a prime.

It is a Sophie Germain prime.

Together with 128453191, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128453389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64226594 + 64226595.

It is an arithmetic number, because the mean of its divisors is an integer number (64226595).

Almost surely, 2^128453189 is an apocalyptic number.

It is an amenable number.

128453189 is a deficient number, since it is larger than the sum of its proper divisors (1).

128453189 is an equidigital number, since it uses as much as digits as its factorization.

128453189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 128453189 is about 11333.7191159831. The cubic root of 128453189 is about 504.5624926884.

The spelling of 128453189 in words is "one hundred twenty-eight million, four hundred fifty-three thousand, one hundred eighty-nine".