19882600866 has 24 divisors (see below), whose sum is σ = 43388894640. Its totient is φ = 6579852696.

The previous prime is 19882600831. The next prime is 19882600919. The reversal of 19882600866 is 66800628891.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3970840 + ... + 3975843.

It is an arithmetic number, because the mean of its divisors is an integer number (1807870610).

Almost surely, 2^19882600866 is an apocalyptic number.

19882600866 is an abundant number, since it is smaller than the sum of its proper divisors (23506293774).

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

19882600866 is a wasteful number, since it uses less digits than its factorization.

19882600866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7946830 (or 7946827 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 19882600866 in words is "nineteen billion, eight hundred eighty-two million, six hundred thousand, eight hundred sixty-six".