1128084509 has 2 divisors, whose sum is σ = 1128084510. Its totient is φ = 1128084508.

The previous prime is 1128084497. The next prime is 1128084533. The reversal of 1128084509 is 9054808211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 626100484 + 501984025 = 25022^2 + 22405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128084509 - 2²⁴ = 1111307293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128084599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564042254 + 564042255.

It is an arithmetic number, because the mean of its divisors is an integer number (564042255).

Almost surely, 2^1128084509 is an apocalyptic number.

It is an amenable number.

1128084509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128084509 is an equidigital number, since it uses as much as digits as its factorization.

1128084509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 1128084509 is about 33586.9693333590. The cubic root of 1128084509 is about 1040.9915681761.

The spelling of 1128084509 in words is "one billion, one hundred twenty-eight million, eighty-four thousand, five hundred nine".