1112355809 has 2 divisors, whose sum is σ = 1112355810. Its totient is φ = 1112355808.

The previous prime is 1112355773. The next prime is 1112355869. The reversal of 1112355809 is 9085532111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110755584 + 1600225 = 33328^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112355809 - 2²⁴ = 1095578593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112355869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556177904 + 556177905.

It is an arithmetic number, because the mean of its divisors is an integer number (556177905).

Almost surely, 2^1112355809 is an apocalyptic number.

It is an amenable number.

1112355809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112355809 is an equidigital number, since it uses as much as digits as its factorization.

1112355809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 1112355809 is about 33351.9985757975. The cubic root of 1112355809 is about 1036.1307808966.

The spelling of 1112355809 in words is "one billion, one hundred twelve million, three hundred fifty-five thousand, eight hundred nine".