13918693 has 4 divisors (see below), whose sum is σ = 13929760. Its totient is φ = 13907628.

The previous prime is 13918687. The next prime is 13918711. The reversal of 13918693 is 39681931.

13918693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 39681931 = 2143 ⋅18517.

It is a cyclic number.

It is not a de Polignac number, because 13918693 - 2⁵ = 13918661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13918613) 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, 3363 + ... + 6256.

It is an arithmetic number, because the mean of its divisors is an integer number (3482440).

Almost surely, 2^13918693 is an apocalyptic number.

It is an amenable number.

13918693 is a deficient number, since it is larger than the sum of its proper divisors (11067).

13918693 is an equidigital number, since it uses as much as digits as its factorization.

13918693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11066.

The product of its digits is 34992, while the sum is 40.

The square root of 13918693 is about 3730.7764607384. The cubic root of 13918693 is about 240.5467454084.

The spelling of 13918693 in words is "thirteen million, nine hundred eighteen thousand, six hundred ninety-three".