19864118966 has 8 divisors (see below), whose sum is σ = 29854718640. Its totient is φ = 9912546088.

The previous prime is 19864118957. The next prime is 19864118969. The reversal of 19864118966 is 66981146891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19864118969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9755426 + ... + 9757461.

It is an arithmetic number, because the mean of its divisors is an integer number (3731839830).

Almost surely, 2^19864118966 is an apocalyptic number.

19864118966 is a deficient number, since it is larger than the sum of its proper divisors (9990599674).

19864118966 is a wasteful number, since it uses less digits than its factorization.

19864118966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19513398.

The product of its digits is 4478976, while the sum is 59.

The spelling of 19864118966 in words is "nineteen billion, eight hundred sixty-four million, one hundred eighteen thousand, nine hundred sixty-six".