18825844 has 12 divisors (see below), whose sum is σ = 32989600. Its totient is φ = 9400248.

The previous prime is 18825841. The next prime is 18825869. The reversal of 18825844 is 44852881.

It is a junction number, because it is equal to n+sod(n) for n = 18825797 and 18825806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697 + ... + 6175.

Almost surely, 2^18825844 is an apocalyptic number.

It is an amenable number.

18825844 is a deficient number, since it is larger than the sum of its proper divisors (14163756).

18825844 is a wasteful number, since it uses less digits than its factorization.

18825844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342 (or 6340 counting only the distinct ones).

The product of its digits is 81920, while the sum is 40.

The square root of 18825844 is about 4338.8758912880. The cubic root of 18825844 is about 266.0223660693.

The spelling of 18825844 in words is "eighteen million, eight hundred twenty-five thousand, eight hundred forty-four".