18173830046 has 4 divisors (see below), whose sum is σ = 27260745072. Its totient is φ = 9086915022.

The previous prime is 18173830039. The next prime is 18173830063. The reversal of 18173830046 is 64003837181.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18173829985 and 18173830012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4543457510 + ... + 4543457513.

It is an arithmetic number, because the mean of its divisors is an integer number (6815186268).

Almost surely, 2^18173830046 is an apocalyptic number.

18173830046 is a deficient number, since it is larger than the sum of its proper divisors (9086915026).

18173830046 is an equidigital number, since it uses as much as digits as its factorization.

18173830046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086915025.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 18173830046 in words is "eighteen billion, one hundred seventy-three million, eight hundred thirty thousand, forty-six".