128737573 has 2 divisors, whose sum is σ = 128737574. Its totient is φ = 128737572.

The previous prime is 128737561. The next prime is 128737579. The reversal of 128737573 is 375737821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68178049 + 60559524 = 8257^2 + 7782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128737573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128737579) 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, 64368786 + 64368787.

It is an arithmetic number, because the mean of its divisors is an integer number (64368787).

Almost surely, 2^128737573 is an apocalyptic number.

It is an amenable number.

128737573 is a deficient number, since it is larger than the sum of its proper divisors (1).

128737573 is an equidigital number, since it uses as much as digits as its factorization.

128737573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 43.

The square root of 128737573 is about 11346.2581056488. The cubic root of 128737573 is about 504.9345704859.

The spelling of 128737573 in words is "one hundred twenty-eight million, seven hundred thirty-seven thousand, five hundred seventy-three".