1128415789 has 2 divisors, whose sum is σ = 1128415790. Its totient is φ = 1128415788.

The previous prime is 1128415763. The next prime is 1128415807. The reversal of 1128415789 is 9875148211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994897764 + 133518025 = 31542^2 + 11555^2 .

It is an emirp because it is prime and its reverse (9875148211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1128415789 - 2⁷ = 1128415661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128418789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564207894 + 564207895.

It is an arithmetic number, because the mean of its divisors is an integer number (564207895).

Almost surely, 2^1128415789 is an apocalyptic number.

It is an amenable number.

1128415789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128415789 is an equidigital number, since it uses as much as digits as its factorization.

1128415789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 46.

The square root of 1128415789 is about 33591.9006458402. The cubic root of 1128415789 is about 1041.0934594593.

The spelling of 1128415789 in words is "one billion, one hundred twenty-eight million, four hundred fifteen thousand, seven hundred eighty-nine".