2942819809 has 2 divisors, whose sum is σ = 2942819810. Its totient is φ = 2942819808.

The previous prime is 2942819797. The next prime is 2942819819. The reversal of 2942819809 is 9089182492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2851560000 + 91259809 = 53400^2 + 9553^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942819809 - 2¹⁵ = 2942787041 is a prime.

It is not a weakly prime, because it can be changed into another prime (2942819819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471409904 + 1471409905.

It is an arithmetic number, because the mean of its divisors is an integer number (1471409905).

Almost surely, 2^2942819809 is an apocalyptic number.

It is an amenable number.

2942819809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942819809 is an equidigital number, since it uses as much as digits as its factorization.

2942819809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 2942819809 is about 54247.7631704755. The cubic root of 2942819809 is about 1433.0276064661.

The spelling of 2942819809 in words is "two billion, nine hundred forty-two million, eight hundred nineteen thousand, eight hundred nine".