13187851 has 2 divisors, whose sum is σ = 13187852. Its totient is φ = 13187850.

The previous prime is 13187833. The next prime is 13187861. The reversal of 13187851 is 15878131.

13187851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13187851 - 2¹⁵ = 13155083 is a prime.

It is not a weakly prime, because it can be changed into another prime (13187861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6593925 + 6593926.

It is an arithmetic number, because the mean of its divisors is an integer number (6593926).

Almost surely, 2^13187851 is an apocalyptic number.

13187851 is a deficient number, since it is larger than the sum of its proper divisors (1).

13187851 is an equidigital number, since it uses as much as digits as its factorization.

13187851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 13187851 is about 3631.5080889350. The cubic root of 13187851 is about 236.2606224986.

The spelling of 13187851 in words is "thirteen million, one hundred eighty-seven thousand, eight hundred fifty-one".