1140728689 has 2 divisors, whose sum is σ = 1140728690. Its totient is φ = 1140728688.

The previous prime is 1140728683. The next prime is 1140728711. The reversal of 1140728689 is 9868270411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1140210289 + 518400 = 33767^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140728689 - 2⁵ = 1140728657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1140728683) 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, 570364344 + 570364345.

It is an arithmetic number, because the mean of its divisors is an integer number (570364345).

Almost surely, 2^1140728689 is an apocalyptic number.

It is an amenable number.

1140728689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140728689 is an equidigital number, since it uses as much as digits as its factorization.

1140728689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 1140728689 is about 33774.6752612072. The cubic root of 1140728689 is about 1044.8664585197.

The spelling of 1140728689 in words is "one billion, one hundred forty million, seven hundred twenty-eight thousand, six hundred eighty-nine".