13378591 has 2 divisors, whose sum is σ = 13378592. Its totient is φ = 13378590.

The previous prime is 13378579. The next prime is 13378613. The reversal of 13378591 is 19587331.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19587331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13378591 - 2¹⁵ = 13345823 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13378591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13378501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6689295 + 6689296.

It is an arithmetic number, because the mean of its divisors is an integer number (6689296).

Almost surely, 2^13378591 is an apocalyptic number.

13378591 is a deficient number, since it is larger than the sum of its proper divisors (1).

13378591 is an equidigital number, since it uses as much as digits as its factorization.

13378591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 13378591 is about 3657.6756280458. The cubic root of 13378591 is about 237.3942117968.

The spelling of 13378591 in words is "thirteen million, three hundred seventy-eight thousand, five hundred ninety-one".