18485382041 has 4 divisors (see below), whose sum is σ = 21126150912. Its totient is φ = 15844613172.

The previous prime is 18485381951. The next prime is 18485382067. The reversal of 18485382041 is 14028358481.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14028358481 = 3313 ⋅4234337.

It is a cyclic number.

It is not a de Polignac number, because 18485382041 - 2¹⁸ = 18485119897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18485381983 and 18485382001.

It is not an unprimeable number, because it can be changed into a prime (18485382341) 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, 1320384425 + ... + 1320384438.

It is an arithmetic number, because the mean of its divisors is an integer number (5281537728).

Almost surely, 2^18485382041 is an apocalyptic number.

It is an amenable number.

18485382041 is a deficient number, since it is larger than the sum of its proper divisors (2640768871).

18485382041 is an equidigital number, since it uses as much as digits as its factorization.

18485382041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640768870.

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 18485382041 in words is "eighteen billion, four hundred eighty-five million, three hundred eighty-two thousand, forty-one".