2168859844 has 12 divisors (see below), whose sum is σ = 3809616300. Its totient is φ = 1080398048.

The previous prime is 2168859811. The next prime is 2168859919. The reversal of 2168859844 is 4489588612.

It can be written as a sum of positive squares in 2 ways, for example, as 334450944 + 1834408900 = 18288^2 + 42830^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006759 + ... + 1008910.

It is an arithmetic number, because the mean of its divisors is an integer number (317468025).

Almost surely, 2^2168859844 is an apocalyptic number.

It is an amenable number.

2168859844 is a deficient number, since it is larger than the sum of its proper divisors (1640756456).

2168859844 is a wasteful number, since it uses less digits than its factorization.

2168859844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015942 (or 2015940 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 55.

The square root of 2168859844 is about 46571.0193575361. The cubic root of 2168859844 is about 1294.4258062762.

The spelling of 2168859844 in words is "two billion, one hundred sixty-eight million, eight hundred fifty-nine thousand, eight hundred forty-four".