18845318 has 8 divisors (see below), whose sum is σ = 28329912. Its totient is φ = 9402016.

The previous prime is 18845311. The next prime is 18845327. The reversal of 18845318 is 81354881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18845318² = 710292021042248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18845311) 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 in 3 ways as a sum of consecutive naturals, for example, 9155 + ... + 11022.

It is an arithmetic number, because the mean of its divisors is an integer number (3541239).

Almost surely, 2^18845318 is an apocalyptic number.

18845318 is a deficient number, since it is larger than the sum of its proper divisors (9484594).

18845318 is a wasteful number, since it uses less digits than its factorization.

18845318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20646.

The product of its digits is 30720, while the sum is 38.

The square root of 18845318 is about 4341.1194408816. The cubic root of 18845318 is about 266.1140615472.

The spelling of 18845318 in words is "eighteen million, eight hundred forty-five thousand, three hundred eighteen".