2840722609 has 2 divisors, whose sum is σ = 2840722610. Its totient is φ = 2840722608.

The previous prime is 2840722561. The next prime is 2840722639. The reversal of 2840722609 is 9062270482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1924752384 + 915970225 = 43872^2 + 30265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840722609 - 2¹⁹ = 2840198321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2840722639) 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, 1420361304 + 1420361305.

It is an arithmetic number, because the mean of its divisors is an integer number (1420361305).

Almost surely, 2^2840722609 is an apocalyptic number.

It is an amenable number.

2840722609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840722609 is an equidigital number, since it uses as much as digits as its factorization.

2840722609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 2840722609 is about 53298.4297048234. The cubic root of 2840722609 is about 1416.2598474647.

The spelling of 2840722609 in words is "two billion, eight hundred forty million, seven hundred twenty-two thousand, six hundred nine".