8161194318 has 32 divisors (see below), whose sum is σ = 17288536320. Its totient is φ = 2559484800.

The previous prime is 8161194299. The next prime is 8161194319. The reversal of 8161194318 is 8134911618.

It is a self number, because there is not a number n which added to its sum of digits gives 8161194318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161194319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320143 + ... + 344693.

It is an arithmetic number, because the mean of its divisors is an integer number (540266760).

Almost surely, 2^8161194318 is an apocalyptic number.

8161194318 is an abundant number, since it is smaller than the sum of its proper divisors (9127342002).

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

8161194318 is a wasteful number, since it uses less digits than its factorization.

8161194318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27832.

The product of its digits is 41472, while the sum is 42.

The square root of 8161194318 is about 90339.3287444621. The cubic root of 8161194318 is about 2013.3436355395.

The spelling of 8161194318 in words is "eight billion, one hundred sixty-one million, one hundred ninety-four thousand, three hundred eighteen".