18044822 has 4 divisors (see below), whose sum is σ = 27067236. Its totient is φ = 9022410.

The previous prime is 18044809. The next prime is 18044827. The reversal of 18044822 is 22844081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22844081 = 13 ⋅1757237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18044827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4511204 + ... + 4511207.

It is an arithmetic number, because the mean of its divisors is an integer number (6766809).

Almost surely, 2^18044822 is an apocalyptic number.

18044822 is a deficient number, since it is larger than the sum of its proper divisors (9022414).

18044822 is an equidigital number, since it uses as much as digits as its factorization.

18044822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9022413.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 18044822 is about 4247.9197261719. The cubic root of 18044822 is about 262.2914903534.

The spelling of 18044822 in words is "eighteen million, forty-four thousand, eight hundred twenty-two".