18844564196 has 12 divisors (see below), whose sum is σ = 33011071548. Its totient is φ = 9412829472.

The previous prime is 18844564183. The next prime is 18844564199. The reversal of 18844564196 is 69146544881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12925416100 + 5919148096 = 113690^2 + 76936^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18844564199) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2358671 + ... + 2366646.

It is an arithmetic number, because the mean of its divisors is an integer number (2750922629).

Almost surely, 2^18844564196 is an apocalyptic number.

It is an amenable number.

18844564196 is a deficient number, since it is larger than the sum of its proper divisors (14166507352).

18844564196 is a wasteful number, since it uses less digits than its factorization.

18844564196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726318 (or 4726316 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 56.

The spelling of 18844564196 in words is "eighteen billion, eight hundred forty-four million, five hundred sixty-four thousand, one hundred ninety-six".