128376013 has 2 divisors, whose sum is σ = 128376014. Its totient is φ = 128376012.

The previous prime is 128375983. The next prime is 128376047. The reversal of 128376013 is 310673821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106874244 + 21501769 = 10338^2 + 4637^2 .

It is a cyclic number.

It is not a de Polignac number, because 128376013 - 2⁵ = 128375981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128370013) 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, 64188006 + 64188007.

It is an arithmetic number, because the mean of its divisors is an integer number (64188007).

Almost surely, 2^128376013 is an apocalyptic number.

It is an amenable number.

128376013 is a deficient number, since it is larger than the sum of its proper divisors (1).

128376013 is an equidigital number, since it uses as much as digits as its factorization.

128376013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 128376013 is about 11330.3138967992. The cubic root of 128376013 is about 504.4614236624.

The spelling of 128376013 in words is "one hundred twenty-eight million, three hundred seventy-six thousand, thirteen".