18448841 has 2 divisors, whose sum is σ = 18448842. Its totient is φ = 18448840.

The previous prime is 18448799. The next prime is 18448873. The reversal of 18448841 is 14884481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 87616 = 4285^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 18448841 - 2⁶ = 18448777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18448795 and 18448804.

It is not a weakly prime, because it can be changed into another prime (18448891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9224420 + 9224421.

It is an arithmetic number, because the mean of its divisors is an integer number (9224421).

Almost surely, 2^18448841 is an apocalyptic number.

It is an amenable number.

18448841 is a deficient number, since it is larger than the sum of its proper divisors (1).

18448841 is an equidigital number, since it uses as much as digits as its factorization.

18448841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32768, while the sum is 38.

The square root of 18448841 is about 4295.2114034119. The cubic root of 18448841 is about 264.2346064588.

The spelling of 18448841 in words is "eighteen million, four hundred forty-eight thousand, eight hundred forty-one".