18843822794 has 16 divisors (see below), whose sum is σ = 29280492360. Its totient is φ = 9088823040.

The previous prime is 18843822779. The next prime is 18843822799. The reversal of 18843822794 is 49722834881.

It can be written as a sum of positive squares in 4 ways, for example, as 9484227769 + 9359595025 = 97387^2 + 96745^2 .

It is not an unprimeable number, because it can be changed into a prime (18843822799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283729 + ... + 1298324.

Almost surely, 2^18843822794 is an apocalyptic number.

18843822794 is a deficient number, since it is larger than the sum of its proper divisors (10436669566).

18843822794 is a wasteful number, since it uses less digits than its factorization.

18843822794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582185.

The product of its digits is 6193152, while the sum is 56.

The spelling of 18843822794 in words is "eighteen billion, eight hundred forty-three million, eight hundred twenty-two thousand, seven hundred ninety-four".