18000411 has 16 divisors (see below), whose sum is σ = 28197120. Its totient is φ = 10069920.

The previous prime is 18000407. The next prime is 18000439. The reversal of 18000411 is 11400081.

It is not a de Polignac number, because 18000411 - 2² = 18000407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18000401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20551 + ... + 21408.

It is an arithmetic number, because the mean of its divisors is an integer number (1762320).

Almost surely, 2^18000411 is an apocalyptic number.

18000411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18000411 is a deficient number, since it is larger than the sum of its proper divisors (10196709).

18000411 is a wasteful number, since it uses less digits than its factorization.

18000411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41986.

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

The square root of 18000411 is about 4242.6891236573. The cubic root of 18000411 is about 262.0761340811.

Adding to 18000411 its reverse (11400081), we get a palindrome (29400492).

The spelling of 18000411 in words is "eighteen million, four hundred eleven", and thus it is an aban number.