13187907 has 8 divisors (see below), whose sum is σ = 19537680. Its totient is φ = 8791920.

The previous prime is 13187897. The next prime is 13187917. The reversal of 13187907 is 70978131.

13187907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13187897) and next prime (13187917).

It is not a de Polignac number, because 13187907 - 2¹¹ = 13185859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13187917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244194 + ... + 244247.

It is an arithmetic number, because the mean of its divisors is an integer number (2442210).

Almost surely, 2^13187907 is an apocalyptic number.

13187907 is a deficient number, since it is larger than the sum of its proper divisors (6349773).

13187907 is an equidigital number, since it uses as much as digits as its factorization.

13187907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488450 (or 488444 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 13187907 is about 3631.5157992221. The cubic root of 13187907 is about 236.2609569118.

The spelling of 13187907 in words is "thirteen million, one hundred eighty-seven thousand, nine hundred seven".