243160009 has 2 divisors, whose sum is σ = 243160010. Its totient is φ = 243160008.

The previous prime is 243160003. The next prime is 243160013. The reversal of 243160009 is 900061342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179479609 + 63680400 = 13397^2 + 7980^2 .

It is a cyclic number.

It is not a de Polignac number, because 243160009 - 2¹¹ = 243157961 is a prime.

It is not a weakly prime, because it can be changed into another prime (243160003) 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, 121580004 + 121580005.

It is an arithmetic number, because the mean of its divisors is an integer number (121580005).

Almost surely, 2^243160009 is an apocalyptic number.

It is an amenable number.

243160009 is a deficient number, since it is larger than the sum of its proper divisors (1).

243160009 is an equidigital number, since it uses as much as digits as its factorization.

243160009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 243160009 is about 15593.5887145968. The cubic root of 243160009 is about 624.1620848191.

The spelling of 243160009 in words is "two hundred forty-three million, one hundred sixty thousand, nine".