1121776609 has 2 divisors, whose sum is σ = 1121776610. Its totient is φ = 1121776608.

The previous prime is 1121776583. The next prime is 1121776613. The reversal of 1121776609 is 9066771211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103900625 + 17875984 = 33225^2 + 4228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121776609 - 2¹⁵ = 1121743841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121776639) 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, 560888304 + 560888305.

It is an arithmetic number, because the mean of its divisors is an integer number (560888305).

Almost surely, 2^1121776609 is an apocalyptic number.

It is an amenable number.

1121776609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121776609 is an equidigital number, since it uses as much as digits as its factorization.

1121776609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 1121776609 is about 33492.9337174276. The cubic root of 1121776609 is about 1039.0476393159.

The spelling of 1121776609 in words is "one billion, one hundred twenty-one million, seven hundred seventy-six thousand, six hundred nine".