128345179 has 2 divisors, whose sum is σ = 128345180. Its totient is φ = 128345178.

The previous prime is 128345167. The next prime is 128345183. The reversal of 128345179 is 971543821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128345179 is a prime.

It is not a weakly prime, because it can be changed into another prime (128345479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64172589 + 64172590.

It is an arithmetic number, because the mean of its divisors is an integer number (64172590).

Almost surely, 2^128345179 is an apocalyptic number.

128345179 is a deficient number, since it is larger than the sum of its proper divisors (1).

128345179 is an equidigital number, since it uses as much as digits as its factorization.

128345179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 128345179 is about 11328.9531290407. The cubic root of 128345179 is about 504.4210323966.

The spelling of 128345179 in words is "one hundred twenty-eight million, three hundred forty-five thousand, one hundred seventy-nine".