18011324841 has 4 divisors (see below), whose sum is σ = 24015099792. Its totient is φ = 12007549892.

The previous prime is 18011324839. The next prime is 18011324867. The reversal of 18011324841 is 14842311081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18011324841 - 2¹ = 18011324839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18011324941) 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, 3001887471 + ... + 3001887476.

It is an arithmetic number, because the mean of its divisors is an integer number (6003774948).

Almost surely, 2^18011324841 is an apocalyptic number.

It is an amenable number.

18011324841 is a deficient number, since it is larger than the sum of its proper divisors (6003774951).

18011324841 is an equidigital number, since it uses as much as digits as its factorization.

18011324841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003774950.

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 18011324841 in words is "eighteen billion, eleven million, three hundred twenty-four thousand, eight hundred forty-one".