18000004411 has 4 divisors (see below), whose sum is σ = 18005934352. Its totient is φ = 17994074472.

The previous prime is 18000004397. The next prime is 18000004453. The reversal of 18000004411 is 11440000081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11440000081 = 739 ⋅15480379.

It is a cyclic number.

It is not a de Polignac number, because 18000004411 - 2¹⁵ = 17999971643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18000004471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2960415 + ... + 2966488.

It is an arithmetic number, because the mean of its divisors is an integer number (4501483588).

Almost surely, 2^18000004411 is an apocalyptic number.

18000004411 is a deficient number, since it is larger than the sum of its proper divisors (5929941).

18000004411 is an equidigital number, since it uses as much as digits as its factorization.

18000004411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929940.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 18000004411 its reverse (11440000081), we get a palindrome (29440004492).

The spelling of 18000004411 in words is "eighteen billion, four thousand, four hundred eleven".