13678191 has 12 divisors (see below), whose sum is σ = 19799520. Its totient is φ = 9099360.

The previous prime is 13678177. The next prime is 13678193. The reversal of 13678191 is 19187631.

It is a de Polignac number, because none of the positive numbers 2^k-13678191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13678193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3786 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (1649960).

Almost surely, 2^13678191 is an apocalyptic number.

13678191 is a deficient number, since it is larger than the sum of its proper divisors (6121329).

13678191 is a wasteful number, since it uses less digits than its factorization.

13678191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246 (or 3243 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13678191 is about 3698.4038449039. The cubic root of 13678191 is about 239.1532137347.

The spelling of 13678191 in words is "thirteen million, six hundred seventy-eight thousand, one hundred ninety-one".