18208241 has 8 divisors (see below), whose sum is σ = 19400544. Its totient is φ = 17029440.

The previous prime is 18208231. The next prime is 18208261. The reversal of 18208241 is 14280281.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18208241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18208241.

It is not an unprimeable number, because it can be changed into a prime (18208231) 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, 515 + ... + 6056.

It is an arithmetic number, because the mean of its divisors is an integer number (2425068).

Almost surely, 2^18208241 is an apocalyptic number.

It is an amenable number.

18208241 is a deficient number, since it is larger than the sum of its proper divisors (1192303).

18208241 is a wasteful number, since it uses less digits than its factorization.

18208241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18208241 is about 4267.1115523267. Note that the first 3 decimals coincide. The cubic root of 18208241 is about 263.0809073173.

The spelling of 18208241 in words is "eighteen million, two hundred eight thousand, two hundred forty-one".