18473449171 has 8 divisors (see below), whose sum is σ = 19364116464. Its totient is φ = 17603738880.

The previous prime is 18473449147. The next prime is 18473449193. The reversal of 18473449171 is 17194437481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18473449171 - 2¹¹ = 18473447123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18473449271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5237446 + ... + 5240971.

It is an arithmetic number, because the mean of its divisors is an integer number (2420514558).

Almost surely, 2^18473449171 is an apocalyptic number.

18473449171 is a deficient number, since it is larger than the sum of its proper divisors (890667293).

18473449171 is a wasteful number, since it uses less digits than its factorization.

18473449171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10478501.

The product of its digits is 677376, while the sum is 49.

The spelling of 18473449171 in words is "eighteen billion, four hundred seventy-three million, four hundred forty-nine thousand, one hundred seventy-one".