2864243209 has 2 divisors, whose sum is σ = 2864243210. Its totient is φ = 2864243208.

The previous prime is 2864243189. The next prime is 2864243237. The reversal of 2864243209 is 9023424682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2134162809 + 730080400 = 46197^2 + 27020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2864243209 - 2¹¹ = 2864241161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2864243269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432121604 + 1432121605.

It is an arithmetic number, because the mean of its divisors is an integer number (1432121605).

Almost surely, 2^2864243209 is an apocalyptic number.

It is an amenable number.

2864243209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2864243209 is an equidigital number, since it uses as much as digits as its factorization.

2864243209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 2864243209 is about 53518.6248795688. The cubic root of 2864243209 is about 1420.1578891091.

The spelling of 2864243209 in words is "two billion, eight hundred sixty-four million, two hundred forty-three thousand, two hundred nine".