2855219820 has 24 divisors (see below), whose sum is σ = 7994615664. Its totient is φ = 761391936.

The previous prime is 2855219791. The next prime is 2855219867. The reversal of 2855219820 is 289125582.

2855219820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23793439 + ... + 23793558.

It is an arithmetic number, because the mean of its divisors is an integer number (333108986).

Almost surely, 2^2855219820 is an apocalyptic number.

2855219820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2855219820 is an abundant number, since it is smaller than the sum of its proper divisors (5139395844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2855219820 is a wasteful number, since it uses less digits than its factorization.

2855219820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47587009 (or 47587007 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 2855219820 is about 53434.2569893135. The cubic root of 2855219820 is about 1418.6649854419.

The spelling of 2855219820 in words is "two billion, eight hundred fifty-five million, two hundred nineteen thousand, eight hundred twenty".