18473689966 has 32 divisors (see below), whose sum is σ = 28885429440. Its totient is φ = 8853659136.

The previous prime is 18473689961. The next prime is 18473689979. The reversal of 18473689966 is 66998637481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18473689961) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1389840 + ... + 1403068.

It is an arithmetic number, because the mean of its divisors is an integer number (902669670).

Almost surely, 2^18473689966 is an apocalyptic number.

18473689966 is a deficient number, since it is larger than the sum of its proper divisors (10411739474).

18473689966 is a wasteful number, since it uses less digits than its factorization.

18473689966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13548.

The product of its digits is 94058496, while the sum is 67.

The spelling of 18473689966 in words is "eighteen billion, four hundred seventy-three million, six hundred eighty-nine thousand, nine hundred sixty-six".