18411 has 12 divisors (see below), whose sum is σ = 27432. Its totient is φ = 10944.

The previous prime is 18401. The next prime is 18413. The reversal of 18411 is 11481.

It is not a de Polignac number, because 18411 - 2⁵ = 18379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 960 + ... + 978.

It is an arithmetic number, because the mean of its divisors is an integer number (2286).

2¹⁸⁴¹¹ is an apocalyptic number.

18411 is a deficient number, since it is larger than the sum of its proper divisors (9021).

18411 is a wasteful number, since it uses less digits than its factorization.

18411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 39 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 18411 is about 135.6871401423. The cubic root of 18411 is about 26.4053822819.

Adding to 18411 its reverse (11481), we get a palindrome (29892).

The spelling of 18411 in words is "eighteen thousand, four hundred eleven".