14381891 has 2 divisors, whose sum is σ = 14381892. Its totient is φ = 14381890.

The previous prime is 14381869. The next prime is 14381893. The reversal of 14381891 is 19818341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 14381891 - 2⁶ = 14381827 is a prime.

It is a Sophie Germain prime.

Together with 14381893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14381893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7190945 + 7190946.

It is an arithmetic number, because the mean of its divisors is an integer number (7190946).

Almost surely, 2^14381891 is an apocalyptic number.

14381891 is a deficient number, since it is larger than the sum of its proper divisors (1).

14381891 is an equidigital number, since it uses as much as digits as its factorization.

14381891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 35.

The square root of 14381891 is about 3792.3463713116. The cubic root of 14381891 is about 243.1860531573.

The spelling of 14381891 in words is "fourteen million, three hundred eighty-one thousand, eight hundred ninety-one".