2685843619 has 2 divisors, whose sum is σ = 2685843620. Its totient is φ = 2685843618.

The previous prime is 2685843581. The next prime is 2685843631. The reversal of 2685843619 is 9163485862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2685843619 is a prime.

It is a super-2 number, since 2×2685843619² = 14427511891446034322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2685843649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342921809 + 1342921810.

It is an arithmetic number, because the mean of its divisors is an integer number (1342921810).

Almost surely, 2^2685843619 is an apocalyptic number.

2685843619 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685843619 is an equidigital number, since it uses as much as digits as its factorization.

2685843619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The square root of 2685843619 is about 51825.1253640548. The cubic root of 2685843619 is about 1390.0387510547.

The spelling of 2685843619 in words is "two billion, six hundred eighty-five million, eight hundred forty-three thousand, six hundred nineteen".