18394844822 has 4 divisors (see below), whose sum is σ = 27592267236. Its totient is φ = 9197422410.

The previous prime is 18394844789. The next prime is 18394844833. The reversal of 18394844822 is 22844849381.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4598711204 + ... + 4598711207.

It is an arithmetic number, because the mean of its divisors is an integer number (6898066809).

Almost surely, 2^18394844822 is an apocalyptic number.

18394844822 is a deficient number, since it is larger than the sum of its proper divisors (9197422414).

18394844822 is an equidigital number, since it uses as much as digits as its factorization.

18394844822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197422413.

The product of its digits is 3538944, while the sum is 53.

The spelling of 18394844822 in words is "eighteen billion, three hundred ninety-four million, eight hundred forty-four thousand, eight hundred twenty-two".