13919442171 has 8 divisors (see below), whose sum is σ = 18559869504. Its totient is φ = 9279321480.

The previous prime is 13919442167. The next prime is 13919442179. The reversal of 13919442171 is 17124491931.

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

It is not a de Polignac number, because 13919442171 - 2² = 13919442167 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13919442179) 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, 68560 + ... + 180386.

It is an arithmetic number, because the mean of its divisors is an integer number (2319983688).

Almost surely, 2^13919442171 is an apocalyptic number.

13919442171 is a deficient number, since it is larger than the sum of its proper divisors (4640427333).

13919442171 is a wasteful number, since it uses less digits than its factorization.

13919442171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153321.

The product of its digits is 54432, while the sum is 42.

The spelling of 13919442171 in words is "thirteen billion, nine hundred nineteen million, four hundred forty-two thousand, one hundred seventy-one".