128837369 has 2 divisors, whose sum is σ = 128837370. Its totient is φ = 128837368.

The previous prime is 128837363. The next prime is 128837399. The reversal of 128837369 is 963738821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119071744 + 9765625 = 10912^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 128837369 - 2²⁴ = 112060153 is a prime.

It is a super-2 number, since 2×128837369² = 33198135301684322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128837363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64418684 + 64418685.

It is an arithmetic number, because the mean of its divisors is an integer number (64418685).

Almost surely, 2^128837369 is an apocalyptic number.

It is an amenable number.

128837369 is a deficient number, since it is larger than the sum of its proper divisors (1).

128837369 is an equidigital number, since it uses as much as digits as its factorization.

128837369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 128837369 is about 11350.6550031265. The cubic root of 128837369 is about 505.0650100929.

The spelling of 128837369 in words is "one hundred twenty-eight million, eight hundred thirty-seven thousand, three hundred sixty-nine".