14181681 has 4 divisors (see below), whose sum is σ = 18908912. Its totient is φ = 9454452.

The previous prime is 14181677. The next prime is 14181683. The reversal of 14181681 is 18618141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 14181681 - 2² = 14181677 is a prime.

It is a super-2 number, since 2×14181681² = 402240151971522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (14181683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363611 + ... + 2363616.

It is an arithmetic number, because the mean of its divisors is an integer number (4727228).

Almost surely, 2^14181681 is an apocalyptic number.

It is an amenable number.

14181681 is a deficient number, since it is larger than the sum of its proper divisors (4727231).

14181681 is an equidigital number, since it uses as much as digits as its factorization.

14181681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727230.

The product of its digits is 1536, while the sum is 30.

The square root of 14181681 is about 3765.8572729194. The cubic root of 14181681 is about 242.0523132131.

The spelling of 14181681 in words is "fourteen million, one hundred eighty-one thousand, six hundred eighty-one".