18844856 has 16 divisors (see below), whose sum is σ = 35384640. Its totient is φ = 9408960.

The previous prime is 18844853. The next prime is 18844873. The reversal of 18844856 is 65844881.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18844853) 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, 6740 + ... + 9116.

It is an arithmetic number, because the mean of its divisors is an integer number (2211540).

Almost surely, 2^18844856 is an apocalyptic number.

It is an amenable number.

18844856 is a deficient number, since it is larger than the sum of its proper divisors (16539784).

18844856 is a wasteful number, since it uses less digits than its factorization.

18844856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3370 counting only the distinct ones).

The product of its digits is 245760, while the sum is 44.

The square root of 18844856 is about 4341.0662284743. The cubic root of 18844856 is about 266.1118869010. Note that the first 3 decimals are identical.

The spelling of 18844856 in words is "eighteen million, eight hundred forty-four thousand, eight hundred fifty-six".