13478191 has 2 divisors, whose sum is σ = 13478192. Its totient is φ = 13478190.

The previous prime is 13478183. The next prime is 13478203. The reversal of 13478191 is 19187431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13478191 - 2³ = 13478183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13478131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6739095 + 6739096.

It is an arithmetic number, because the mean of its divisors is an integer number (6739096).

Almost surely, 2^13478191 is an apocalyptic number.

13478191 is a deficient number, since it is larger than the sum of its proper divisors (1).

13478191 is an equidigital number, since it uses as much as digits as its factorization.

13478191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 13478191 is about 3671.2655855985. The cubic root of 13478191 is about 237.9818678369.

The spelling of 13478191 in words is "thirteen million, four hundred seventy-eight thousand, one hundred ninety-one".