18052440841 has 4 divisors (see below), whose sum is σ = 18052996500. Its totient is φ = 18051885184.

The previous prime is 18052440779. The next prime is 18052440881. The reversal of 18052440841 is 14804425081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4841237241 + 13211203600 = 69579^2 + 114940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18052440841 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 18052440841.

It is not an unprimeable number, because it can be changed into a prime (18052440881) 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 3 ways as a sum of consecutive naturals, for example, 225856 + ... + 295153.

It is an arithmetic number, because the mean of its divisors is an integer number (4513249125).

Almost surely, 2^18052440841 is an apocalyptic number.

It is an amenable number.

18052440841 is a deficient number, since it is larger than the sum of its proper divisors (555659).

18052440841 is an equidigital number, since it uses as much as digits as its factorization.

18052440841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555658.

The product of its (nonzero) digits is 40960, while the sum is 37.

The spelling of 18052440841 in words is "eighteen billion, fifty-two million, four hundred forty thousand, eight hundred forty-one".