18855441 has 24 divisors (see below), whose sum is σ = 29860896. Its totient is φ = 11370240.

The previous prime is 18855407. The next prime is 18855479. The reversal of 18855441 is 14455881.

It is not a de Polignac number, because 18855441 - 2¹⁸ = 18593297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18855396 and 18855405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18855401) 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 23 ways as a sum of consecutive naturals, for example, 27681 + ... + 28353.

It is an arithmetic number, because the mean of its divisors is an integer number (1244204).

Almost surely, 2^18855441 is an apocalyptic number.

18855441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18855441 is a deficient number, since it is larger than the sum of its proper divisors (11005455).

18855441 is a wasteful number, since it uses less digits than its factorization.

18855441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 970 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 18855441 is about 4342.2852278495. The cubic root of 18855441 is about 266.1617018584.

The spelling of 18855441 in words is "eighteen million, eight hundred fifty-five thousand, four hundred forty-one".