13718381 has 8 divisors (see below), whose sum is σ = 13906080. Its totient is φ = 13532272.

The previous prime is 13718377. The next prime is 13718389. The reversal of 13718381 is 18381731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13718381 - 2² = 13718377 is a prime.

It is a super-2 number, since 2×13718381² = 376387954522322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13718389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30746 + ... + 31188.

It is an arithmetic number, because the mean of its divisors is an integer number (1738260).

Almost surely, 2^13718381 is an apocalyptic number.

It is an amenable number.

13718381 is a deficient number, since it is larger than the sum of its proper divisors (187699).

13718381 is a wasteful number, since it uses less digits than its factorization.

13718381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795.

The product of its digits is 4032, while the sum is 32.

The square root of 13718381 is about 3703.8332845850. The cubic root of 13718381 is about 239.3872156641.

The spelling of 13718381 in words is "thirteen million, seven hundred eighteen thousand, three hundred eighty-one".