13113818 has 16 divisors (see below), whose sum is σ = 20744640. Its totient is φ = 6205056.

The previous prime is 13113811. The next prime is 13113929. The reversal of 13113818 is 81831131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13113811) 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, 2993 + ... + 5931.

It is an arithmetic number, because the mean of its divisors is an integer number (1296540).

Almost surely, 2^13113818 is an apocalyptic number.

13113818 is a deficient number, since it is larger than the sum of its proper divisors (7630822).

13113818 is a wasteful number, since it uses less digits than its factorization.

13113818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its digits is 576, while the sum is 26.

The square root of 13113818 is about 3621.3005950901. The cubic root of 13113818 is about 235.8176917238.

Adding to 13113818 its reverse (81831131), we get a palindrome (94944949).

It can be divided in two parts, 13113 and 818, that added together give a palindrome (13931).

The spelling of 13113818 in words is "thirteen million, one hundred thirteen thousand, eight hundred eighteen".