18813322 has 36 divisors (see below), whose sum is σ = 33073110. Its totient is φ = 8018560.

The previous prime is 18813313. The next prime is 18813329. The reversal of 18813322 is 22331881.

It can be written as a sum of positive squares in 3 ways, for example, as 16475481 + 2337841 = 4059^2 + 1529^2 .

It is not an unprimeable number, because it can be changed into a prime (18813329) by changing a digit.

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 in 17 ways as a sum of consecutive naturals, for example, 69804 + ... + 70072.

Almost surely, 2^18813322 is an apocalyptic number.

18813322 is a deficient number, since it is larger than the sum of its proper divisors (14259788).

18813322 is a wasteful number, since it uses less digits than its factorization.

18813322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 299 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 18813322 is about 4337.4326507740. The cubic root of 18813322 is about 265.9633714428.

The spelling of 18813322 in words is "eighteen million, eight hundred thirteen thousand, three hundred twenty-two".