14681993 has 4 divisors (see below), whose sum is σ = 14691600. Its totient is φ = 14672388.

The previous prime is 14681987. The next prime is 14682011. The reversal of 14681993 is 39918641.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39918641 = 7 ⋅5702663.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14681993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14681993.

It is not an unprimeable number, because it can be changed into a prime (14681923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 5756.

It is an arithmetic number, because the mean of its divisors is an integer number (3672900).

Almost surely, 2^14681993 is an apocalyptic number.

It is an amenable number.

14681993 is a deficient number, since it is larger than the sum of its proper divisors (9607).

14681993 is an equidigital number, since it uses as much as digits as its factorization.

14681993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9606.

The product of its digits is 46656, while the sum is 41.

The square root of 14681993 is about 3831.7088876897. The cubic root of 14681993 is about 244.8659158026.

The spelling of 14681993 in words is "fourteen million, six hundred eighty-one thousand, nine hundred ninety-three".