13928989118185 has 4 divisors (see below), whose sum is σ = 16714786941828. Its totient is φ = 11143191294544.

The previous prime is 13928989118171. The next prime is 13928989118221. The reversal of 13928989118185 is 58181198982931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3972320052624 + 9956669065561 = 1993068^2 + 3155419^2 .

It is a cyclic number.

It is not a de Polignac number, because 13928989118185 - 2²³ = 13928980729577 is a prime.

It is a super-2 number, since 2×13928989118185² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392898911814 + ... + 1392898911823.

It is an arithmetic number, because the mean of its divisors is an integer number (4178696735457).

Almost surely, 2^{13928989118185} is an apocalyptic number.

It is an amenable number.

13928989118185 is a deficient number, since it is larger than the sum of its proper divisors (2785797823643).

13928989118185 is an equidigital number, since it uses as much as digits as its factorization.

13928989118185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785797823642.

The product of its digits is 89579520, while the sum is 73.

The spelling of 13928989118185 in words is "thirteen trillion, nine hundred twenty-eight billion, nine hundred eighty-nine million, one hundred eighteen thousand, one hundred eighty-five".