13865318 has 4 divisors (see below), whose sum is σ = 20797980. Its totient is φ = 6932658.

The previous prime is 13865317. The next prime is 13865323. The reversal of 13865318 is 81356831.

13865318 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 an emirpimes, since its reverse is a distinct semiprime: 81356831 = 149 ⋅546019.

It is a super-2 number, since 2×13865318² = 384494086482248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13865317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3466328 + ... + 3466331.

It is an arithmetic number, because the mean of its divisors is an integer number (5199495).

Almost surely, 2^13865318 is an apocalyptic number.

13865318 is a deficient number, since it is larger than the sum of its proper divisors (6932662).

13865318 is an equidigital number, since it uses as much as digits as its factorization.

13865318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932661.

The product of its digits is 17280, while the sum is 35.

The square root of 13865318 is about 3723.6162530529. The cubic root of 13865318 is about 240.2388709702.

It can be divided in two parts, 138 and 65318, that added together give a palindrome (65456).

The spelling of 13865318 in words is "thirteen million, eight hundred sixty-five thousand, three hundred eighteen".