1128759089 has 4 divisors (see below), whose sum is σ = 1133731824. Its totient is φ = 1123786356.

The previous prime is 1128759061. The next prime is 1128759103. The reversal of 1128759089 is 9809578211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9809578211 = 281 ⋅34909531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128759089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128759019) 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 in 3 ways as a sum of consecutive naturals, for example, 2486027 + ... + 2486480.

It is an arithmetic number, because the mean of its divisors is an integer number (283432956).

Almost surely, 2^1128759089 is an apocalyptic number.

It is an amenable number.

1128759089 is a deficient number, since it is larger than the sum of its proper divisors (4972735).

1128759089 is an equidigital number, since it uses as much as digits as its factorization.

1128759089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972734.

The product of its (nonzero) digits is 362880, while the sum is 50.

The square root of 1128759089 is about 33597.0101199497. The cubic root of 1128759089 is about 1041.1990266770.

The spelling of 1128759089 in words is "one billion, one hundred twenty-eight million, seven hundred fifty-nine thousand, eighty-nine".