4481391866 has 16 divisors (see below), whose sum is σ = 7947296640. Its totient is φ = 1854368880.

The previous prime is 4481391853. The next prime is 4481391907. The reversal of 4481391866 is 6681931844.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5518550 + ... + 5519361.

It is an arithmetic number, because the mean of its divisors is an integer number (496706040).

Almost surely, 2^4481391866 is an apocalyptic number.

4481391866 is a deficient number, since it is larger than the sum of its proper divisors (3465904774).

4481391866 is a wasteful number, since it uses less digits than its factorization.

4481391866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11037949.

The product of its digits is 995328, while the sum is 50.

The square root of 4481391866 is about 66943.1988031645. The cubic root of 4481391866 is about 1648.6848247725.

The spelling of 4481391866 in words is "four billion, four hundred eighty-one million, three hundred ninety-one thousand, eight hundred sixty-six".