1144332809 has 2 divisors, whose sum is σ = 1144332810. Its totient is φ = 1144332808.

The previous prime is 1144332803. The next prime is 1144332863. The reversal of 1144332809 is 9082334411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1142642809 + 1690000 = 33803^2 + 1300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144332809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1144332803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572166404 + 572166405.

It is an arithmetic number, because the mean of its divisors is an integer number (572166405).

Almost surely, 2^1144332809 is an apocalyptic number.

It is an amenable number.

1144332809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144332809 is an equidigital number, since it uses as much as digits as its factorization.

1144332809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1144332809 is about 33827.9885449904. The cubic root of 1144332809 is about 1045.9657164054.

The spelling of 1144332809 in words is "one billion, one hundred forty-four million, three hundred thirty-two thousand, eight hundred nine".