4881811866 has 32 divisors (see below), whose sum is σ = 9980694720. Its totient is φ = 1591378944.

The previous prime is 4881811819. The next prime is 4881811897. The reversal of 4881811866 is 6681181884.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32596 + ... + 104048.

It is an arithmetic number, because the mean of its divisors is an integer number (311896710).

Almost surely, 2^4881811866 is an apocalyptic number.

4881811866 is an abundant number, since it is smaller than the sum of its proper divisors (5098882854).

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

4881811866 is a wasteful number, since it uses less digits than its factorization.

4881811866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71710.

The product of its digits is 589824, while the sum is 51.

The square root of 4881811866 is about 69869.9639759461. The cubic root of 4881811866 is about 1696.3951138761.

The spelling of 4881811866 in words is "four billion, eight hundred eighty-one million, eight hundred eleven thousand, eight hundred sixty-six".