2889646856 has 16 divisors (see below), whose sum is σ = 5533367040. Its totient is φ = 1414082320.

The previous prime is 2889646843. The next prime is 2889646861. The reversal of 2889646856 is 6586469882.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842240 + ... + 3842991.

It is an arithmetic number, because the mean of its divisors is an integer number (345835440).

Almost surely, 2^2889646856 is an apocalyptic number.

It is an amenable number.

2889646856 is a deficient number, since it is larger than the sum of its proper divisors (2643720184).

2889646856 is a wasteful number, since it uses less digits than its factorization.

2889646856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685284 (or 7685280 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 62.

The square root of 2889646856 is about 53755.4355949238. The cubic root of 2889646856 is about 1424.3441087031.

The spelling of 2889646856 in words is "two billion, eight hundred eighty-nine million, six hundred forty-six thousand, eight hundred fifty-six".