2823661866 has 16 divisors (see below), whose sum is σ = 5691792384. Its totient is φ = 933809184.

The previous prime is 2823661849. The next prime is 2823661889. The reversal of 2823661866 is 6681663282.

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, 1852035 + ... + 1853558.

It is an arithmetic number, because the mean of its divisors is an integer number (355737024).

Almost surely, 2^2823661866 is an apocalyptic number.

2823661866 is an abundant number, since it is smaller than the sum of its proper divisors (2868130518).

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

2823661866 is a wasteful number, since it uses less digits than its factorization.

2823661866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705725.

The product of its digits is 995328, while the sum is 48.

The square root of 2823661866 is about 53138.1394668650. The cubic root of 2823661866 is about 1413.4189061430.

The spelling of 2823661866 in words is "two billion, eight hundred twenty-three million, six hundred sixty-one thousand, eight hundred sixty-six".