14188381 has 2 divisors, whose sum is σ = 14188382. Its totient is φ = 14188380.

The previous prime is 14188373. The next prime is 14188397. The reversal of 14188381 is 18388141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14182756 + 5625 = 3766^2 + 75^2 .

It is an emirp because it is prime and its reverse (18388141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14188381 - 2³ = 14188373 is a prime.

It is a super-2 number, since 2×14188381² = 402620310802322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14188301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7094190 + 7094191.

It is an arithmetic number, because the mean of its divisors is an integer number (7094191).

Almost surely, 2^14188381 is an apocalyptic number.

It is an amenable number.

14188381 is a deficient number, since it is larger than the sum of its proper divisors (1).

14188381 is an equidigital number, since it uses as much as digits as its factorization.

14188381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 34.

The square root of 14188381 is about 3766.7467395619. The cubic root of 14188381 is about 242.0904256478.

The spelling of 14188381 in words is "fourteen million, one hundred eighty-eight thousand, three hundred eighty-one".