13819387171 has 6 divisors (see below), whose sum is σ = 14148244140. Its totient is φ = 13498004268.

The previous prime is 13819387123. The next prime is 13819387199. The reversal of 13819387171 is 17178391831.

It is a happy number.

It is not a de Polignac number, because 13819387171 - 2¹¹ = 13819385123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13819385171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3735141 + ... + 3738838.

It is an arithmetic number, because the mean of its divisors is an integer number (2358040690).

Almost surely, 2^13819387171 is an apocalyptic number.

13819387171 is a deficient number, since it is larger than the sum of its proper divisors (328856969).

13819387171 is an frugal number, since it uses more digits than its factorization.

13819387171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474065 (or 7474022 counting only the distinct ones).

The product of its digits is 254016, while the sum is 49.

The spelling of 13819387171 in words is "thirteen billion, eight hundred nineteen million, three hundred eighty-seven thousand, one hundred seventy-one".