196816815186 has 16 divisors (see below), whose sum is σ = 394730107200. Its totient is φ = 65422858928.

The previous prime is 196816815179. The next prime is 196816815233. The reversal of 196816815186 is 681518618691.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 45684201 + ... + 45688508.

It is an arithmetic number, because the mean of its divisors is an integer number (24670631700).

Almost surely, 2^196816815186 is an apocalyptic number.

196816815186 is an abundant number, since it is smaller than the sum of its proper divisors (197913292014).

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

196816815186 is a wasteful number, since it uses less digits than its factorization.

196816815186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91373073.

The product of its digits is 4976640, while the sum is 60.

The spelling of 196816815186 in words is "one hundred ninety-six billion, eight hundred sixteen million, eight hundred fifteen thousand, one hundred eighty-six".