18441793841 has 4 divisors (see below), whose sum is σ = 18443516784. Its totient is φ = 18440070900.

The previous prime is 18441793831. The next prime is 18441793847. The reversal of 18441793841 is 14839714481.

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 a de Polignac number, because none of the positive numbers 2^k-18441793841 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 18441793841.

It is not an unprimeable number, because it can be changed into a prime (18441793847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845315 + ... + 866856.

It is an arithmetic number, because the mean of its divisors is an integer number (4610879196).

Almost surely, 2^18441793841 is an apocalyptic number.

It is an amenable number.

18441793841 is a deficient number, since it is larger than the sum of its proper divisors (1722943).

18441793841 is a wasteful number, since it uses less digits than its factorization.

18441793841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722942.

The product of its digits is 774144, while the sum is 50.

The spelling of 18441793841 in words is "eighteen billion, four hundred forty-one million, seven hundred ninety-three thousand, eight hundred forty-one".