2143204289 has 2 divisors, whose sum is σ = 2143204290. Its totient is φ = 2143204288.

The previous prime is 2143204201. The next prime is 2143204291. The reversal of 2143204289 is 9824023412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2142949264 + 255025 = 46292^2 + 505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143204289 is a prime.

It is a Sophie Germain prime.

Together with 2143204291, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2143204489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071602144 + 1071602145.

It is an arithmetic number, because the mean of its divisors is an integer number (1071602145).

Almost surely, 2^2143204289 is an apocalyptic number.

It is an amenable number.

2143204289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143204289 is an equidigital number, since it uses as much as digits as its factorization.

2143204289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 2143204289 is about 46294.7544436732. The cubic root of 2143204289 is about 1289.3016048165.

The spelling of 2143204289 in words is "two billion, one hundred forty-three million, two hundred four thousand, two hundred eighty-nine".