18844226 has 4 divisors (see below), whose sum is σ = 28266342. Its totient is φ = 9422112.

The previous prime is 18844207. The next prime is 18844283. The reversal of 18844226 is 62244881.

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., 14070001 + 4774225 = 3751^2 + 2185^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4711055 + ... + 4711058.

Almost surely, 2^18844226 is an apocalyptic number.

18844226 is a deficient number, since it is larger than the sum of its proper divisors (9422116).

18844226 is an equidigital number, since it uses as much as digits as its factorization.

18844226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9422115.

The product of its digits is 24576, while the sum is 35.

The square root of 18844226 is about 4340.9936650495. The cubic root of 18844226 is about 266.1089214170.

The spelling of 18844226 in words is "eighteen million, eight hundred forty-four thousand, two hundred twenty-six".