1123532009 has 2 divisors, whose sum is σ = 1123532010. Its totient is φ = 1123532008.

The previous prime is 1123531987. The next prime is 1123532021. The reversal of 1123532009 is 9002353211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1118568025 + 4963984 = 33445^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123532009 - 2⁸ = 1123531753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123532089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561766004 + 561766005.

It is an arithmetic number, because the mean of its divisors is an integer number (561766005).

Almost surely, 2^1123532009 is an apocalyptic number.

It is an amenable number.

1123532009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123532009 is an equidigital number, since it uses as much as digits as its factorization.

1123532009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1123532009 is about 33519.1290012136. The cubic root of 1123532009 is about 1039.5893376792.

The spelling of 1123532009 in words is "one billion, one hundred twenty-three million, five hundred thirty-two thousand, nine".