13378791 has 4 divisors (see below), whose sum is σ = 17838392. Its totient is φ = 8919192.

The previous prime is 13378789. The next prime is 13378811. The reversal of 13378791 is 19787331.

It is a happy number.

13378791 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13378791 - 2¹ = 13378789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13378721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229796 + ... + 2229801.

It is an arithmetic number, because the mean of its divisors is an integer number (4459598).

Almost surely, 2^13378791 is an apocalyptic number.

13378791 is a deficient number, since it is larger than the sum of its proper divisors (4459601).

13378791 is an equidigital number, since it uses as much as digits as its factorization.

13378791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459600.

The product of its digits is 31752, while the sum is 39.

The square root of 13378791 is about 3657.7029677107. The cubic root of 13378791 is about 237.3953947467.

The spelling of 13378791 in words is "thirteen million, three hundred seventy-eight thousand, seven hundred ninety-one".