1112856509 has 2 divisors, whose sum is σ = 1112856510. Its totient is φ = 1112856508.

The previous prime is 1112856491. The next prime is 1112856523. The reversal of 1112856509 is 9056582111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 990864484 + 121992025 = 31478^2 + 11045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112856509 - 2¹² = 1112852413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112856709) 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, 556428254 + 556428255.

It is an arithmetic number, because the mean of its divisors is an integer number (556428255).

Almost surely, 2^1112856509 is an apocalyptic number.

It is an amenable number.

1112856509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112856509 is an equidigital number, since it uses as much as digits as its factorization.

1112856509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 38.

The square root of 1112856509 is about 33359.5040280877. The cubic root of 1112856509 is about 1036.2862206270.

The spelling of 1112856509 in words is "one billion, one hundred twelve million, eight hundred fifty-six thousand, five hundred nine".