8194618223 has 4 divisors (see below), whose sum is σ = 8939583528. Its totient is φ = 7449652920.

The previous prime is 8194618207. The next prime is 8194618249. The reversal of 8194618223 is 3228164918.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8194618223 - 2⁴ = 8194618207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8194618423) 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, 372482636 + ... + 372482657.

It is an arithmetic number, because the mean of its divisors is an integer number (2234895882).

Almost surely, 2^8194618223 is an apocalyptic number.

8194618223 is a deficient number, since it is larger than the sum of its proper divisors (744965305).

8194618223 is a wasteful number, since it uses less digits than its factorization.

8194618223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744965304.

The product of its digits is 165888, while the sum is 44.

The square root of 8194618223 is about 90524.1306116772. The cubic root of 8194618223 is about 2016.0884196038.

The spelling of 8194618223 in words is "eight billion, one hundred ninety-four million, six hundred eighteen thousand, two hundred twenty-three".