18859841 has 32 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 13343040.

The previous prime is 18859829. The next prime is 18859847. The reversal of 18859841 is 14895881.

It is a cyclic number.

It is not a de Polignac number, because 18859841 - 2⁶ = 18859777 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18859792 and 18859801.

It is not an unprimeable number, because it can be changed into a prime (18859847) 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 31 ways as a sum of consecutive naturals, for example, 82970 + ... + 83196.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^18859841 is an apocalyptic number.

18859841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18859841 is a deficient number, since it is larger than the sum of its proper divisors (6880447).

18859841 is a wasteful number, since it uses less digits than its factorization.

18859841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its digits is 92160, while the sum is 44.

The square root of 18859841 is about 4342.7918439640. The cubic root of 18859841 is about 266.1824035824.

The spelling of 18859841 in words is "eighteen million, eight hundred fifty-nine thousand, eight hundred forty-one".