8186664922 has 4 divisors (see below), whose sum is σ = 12279997386. Its totient is φ = 4093332460.

The previous prime is 8186664887. The next prime is 8186664923. The reversal of 8186664922 is 2294666818.

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

It can be written as a sum of positive squares in only one way, i.e., 7497654921 + 689010001 = 86589^2 + 26249^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8186664922.

It is not an unprimeable number, because it can be changed into a prime (8186664923) 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 as a sum of consecutive naturals, namely, 2046666229 + ... + 2046666232.

Almost surely, 2^8186664922 is an apocalyptic number.

8186664922 is a deficient number, since it is larger than the sum of its proper divisors (4093332464).

8186664922 is a wasteful number, since it uses less digits than its factorization.

8186664922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093332463.

The product of its digits is 1990656, while the sum is 52.

The square root of 8186664922 is about 90480.1907712401. The cubic root of 8186664922 is about 2015.4359691027.

The spelling of 8186664922 in words is "eight billion, one hundred eighty-six million, six hundred sixty-four thousand, nine hundred twenty-two".