13813018 has 16 divisors (see below), whose sum is σ = 22083840. Its totient is φ = 6464656.

The previous prime is 13813013. The next prime is 13813039. The reversal of 13813018 is 81031831.

It is a junction number, because it is equal to n+sod(n) for n = 13812983 and 13813001.

It is not an unprimeable number, because it can be changed into a prime (13813013) 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 7 ways as a sum of consecutive naturals, for example, 1033 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (1380240).

Almost surely, 2^13813018 is an apocalyptic number.

13813018 is a deficient number, since it is larger than the sum of its proper divisors (8270822).

13813018 is a wasteful number, since it uses less digits than its factorization.

13813018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 13813018 is about 3716.5868750777. The cubic root of 13813018 is about 239.9364299226.

Adding to 13813018 its reverse (81031831), we get a palindrome (94844849).

The spelling of 13813018 in words is "thirteen million, eight hundred thirteen thousand, eighteen".