2851800856 has 32 divisors (see below), whose sum is σ = 5523223680. Its totient is φ = 1379001600.

The previous prime is 2851800851. The next prime is 2851800871. The reversal of 2851800856 is 6580081582.

2851800856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851800851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527286 + ... + 532666.

It is an arithmetic number, because the mean of its divisors is an integer number (172600740).

Almost surely, 2^2851800856 is an apocalyptic number.

It is an amenable number.

2851800856 is a deficient number, since it is larger than the sum of its proper divisors (2671422824).

2851800856 is a wasteful number, since it uses less digits than its factorization.

2851800856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555 (or 7551 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 43.

The square root of 2851800856 is about 53402.2551583732. The cubic root of 2851800856 is about 1418.0985022847.

The spelling of 2851800856 in words is "two billion, eight hundred fifty-one million, eight hundred thousand, eight hundred fifty-six".