128330513 has 2 divisors, whose sum is σ = 128330514. Its totient is φ = 128330512.

The previous prime is 128330507. The next prime is 128330551. The reversal of 128330513 is 315033821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128300929 + 29584 = 11327^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 128330513 - 2²⁰ = 127281937 is a prime.

It is not a weakly prime, because it can be changed into another prime (128330563) 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, 64165256 + 64165257.

It is an arithmetic number, because the mean of its divisors is an integer number (64165257).

Almost surely, 2^128330513 is an apocalyptic number.

It is an amenable number.

128330513 is a deficient number, since it is larger than the sum of its proper divisors (1).

128330513 is an equidigital number, since it uses as much as digits as its factorization.

128330513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 128330513 is about 11328.3058309705. The cubic root of 128330513 is about 504.4018182723.

The spelling of 128330513 in words is "one hundred twenty-eight million, three hundred thirty thousand, five hundred thirteen".