18182473287847 has 4 divisors (see below), whose sum is σ = 19835425404936. Its totient is φ = 16529521170760.

The previous prime is 18182473287817. The next prime is 18182473287857. The reversal of 18182473287847 is 74878237428181.

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

It is a cyclic number.

It is not a de Polignac number, because 18182473287847 - 2¹¹ = 18182473285799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182473287817) 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, 826476058528 + ... + 826476058549.

It is an arithmetic number, because the mean of its divisors is an integer number (4958856351234).

Almost surely, 2^{18182473287847} is an apocalyptic number.

18182473287847 is a deficient number, since it is larger than the sum of its proper divisors (1652952117089).

18182473287847 is a wasteful number, since it uses less digits than its factorization.

18182473287847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652952117088.

The product of its digits is 269746176, while the sum is 70.

The spelling of 18182473287847 in words is "eighteen trillion, one hundred eighty-two billion, four hundred seventy-three million, two hundred eighty-seven thousand, eight hundred forty-seven".