18333241 has 8 divisors (see below), whose sum is σ = 18882504. Its totient is φ = 17786880.

The previous prime is 18333209. The next prime is 18333257. The reversal of 18333241 is 14233381.

It can be written as a sum of positive squares in 4 ways, for example, as 5659641 + 12673600 = 2379^2 + 3560^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18333241 - 2⁵ = 18333209 is a prime.

It is a super-2 number, since 2×18333241² = 672215451128162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18333281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23331 + ... + 24103.

It is an arithmetic number, because the mean of its divisors is an integer number (2360313).

Almost surely, 2^18333241 is an apocalyptic number.

It is an amenable number.

18333241 is a deficient number, since it is larger than the sum of its proper divisors (549263).

18333241 is an equidigital number, since it uses as much as digits as its factorization.

18333241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451.

The product of its digits is 1728, while the sum is 25.

The square root of 18333241 is about 4281.7334106644. The cubic root of 18333241 is about 263.6815537820.

The spelling of 18333241 in words is "eighteen million, three hundred thirty-three thousand, two hundred forty-one".