18019066841 has 4 divisors (see below), whose sum is σ = 18967438800. Its totient is φ = 17070694884.

The previous prime is 18019066837. The next prime is 18019066843. The reversal of 18019066841 is 14866091081.

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 18019066841 - 2² = 18019066837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18019066792 and 18019066801.

It is not an unprimeable number, because it can be changed into a prime (18019066843) 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, 474185951 + ... + 474185988.

It is an arithmetic number, because the mean of its divisors is an integer number (4741859700).

Almost surely, 2^18019066841 is an apocalyptic number.

It is an amenable number.

18019066841 is a deficient number, since it is larger than the sum of its proper divisors (948371959).

18019066841 is an equidigital number, since it uses as much as digits as its factorization.

18019066841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948371958.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 18019066841 in words is "eighteen billion, nineteen million, sixty-six thousand, eight hundred forty-one".