2168020879 has 2 divisors, whose sum is σ = 2168020880. Its totient is φ = 2168020878.

The previous prime is 2168020873. The next prime is 2168020901. The reversal of 2168020879 is 9780208612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168020879 - 2⁵ = 2168020847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168020873) 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, 1084010439 + 1084010440.

It is an arithmetic number, because the mean of its divisors is an integer number (1084010440).

Almost surely, 2^2168020879 is an apocalyptic number.

2168020879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168020879 is an equidigital number, since it uses as much as digits as its factorization.

2168020879 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 43.

The square root of 2168020879 is about 46562.0111142120. The cubic root of 2168020879 is about 1294.2588801672.

The spelling of 2168020879 in words is "two billion, one hundred sixty-eight million, twenty thousand, eight hundred seventy-nine".