195886994518 has 16 divisors (see below), whose sum is σ = 301816808640. Its totient is φ = 95305483456.

The previous prime is 195886994489. The next prime is 195886994557. The reversal of 195886994518 is 815499688591.

It is a congruent number.

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, 6006583 + ... + 6039106.

It is an arithmetic number, because the mean of its divisors is an integer number (18863550540).

Almost surely, 2^195886994518 is an apocalyptic number.

195886994518 is a deficient number, since it is larger than the sum of its proper divisors (105929814122).

195886994518 is a wasteful number, since it uses less digits than its factorization.

195886994518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12045911.

The product of its digits is 223948800, while the sum is 73.

The spelling of 195886994518 in words is "one hundred ninety-five billion, eight hundred eighty-six million, nine hundred ninety-four thousand, five hundred eighteen".