128348161 has 2 divisors, whose sum is σ = 128348162. Its totient is φ = 128348160.

The previous prime is 128348149. The next prime is 128348179. The reversal of 128348161 is 161843821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 47348161 = 9000^2 + 6881^2 .

It is a cyclic number.

It is not a de Polignac number, because 128348161 - 2²¹ = 126251009 is a prime.

It is not a weakly prime, because it can be changed into another prime (128348111) 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, 64174080 + 64174081.

It is an arithmetic number, because the mean of its divisors is an integer number (64174081).

Almost surely, 2^128348161 is an apocalyptic number.

It is an amenable number.

128348161 is a deficient number, since it is larger than the sum of its proper divisors (1).

128348161 is an equidigital number, since it uses as much as digits as its factorization.

128348161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 34.

The square root of 128348161 is about 11329.0847379654. The cubic root of 128348161 is about 504.4249389759.

The spelling of 128348161 in words is "one hundred twenty-eight million, three hundred forty-eight thousand, one hundred sixty-one".