18170794673 has 4 divisors (see below), whose sum is σ = 18960829248. Its totient is φ = 17380760100.

The previous prime is 18170794669. The next prime is 18170794769. The reversal of 18170794673 is 37649707181.

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 18170794673 - 2² = 18170794669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18170794613) 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, 395017253 + ... + 395017298.

It is an arithmetic number, because the mean of its divisors is an integer number (4740207312).

Almost surely, 2^18170794673 is an apocalyptic number.

It is an amenable number.

18170794673 is a deficient number, since it is larger than the sum of its proper divisors (790034575).

18170794673 is an equidigital number, since it uses as much as digits as its factorization.

18170794673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790034574.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 18170794673 in words is "eighteen billion, one hundred seventy million, seven hundred ninety-four thousand, six hundred seventy-three".