2000856779 has 16 divisors (see below), whose sum is σ = 2163532800. Its totient is φ = 1845619776.

The previous prime is 2000856773. The next prime is 2000856799. The reversal of 2000856779 is 9776580002.

It is a cyclic number.

It is not a de Polignac number, because 2000856779 - 2⁸ = 2000856523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000856773) 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 in 15 ways as a sum of consecutive naturals, for example, 65327 + ... + 90935.

It is an arithmetic number, because the mean of its divisors is an integer number (135220800).

Almost surely, 2^2000856779 is an apocalyptic number.

2000856779 is a deficient number, since it is larger than the sum of its proper divisors (162676021).

2000856779 is a wasteful number, since it uses less digits than its factorization.

2000856779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25754.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 2000856779 is about 44730.9376047496. The cubic root of 2000856779 is about 1260.1009365263.

The spelling of 2000856779 in words is "two billion, eight hundred fifty-six thousand, seven hundred seventy-nine".