13818612 has 24 divisors (see below), whose sum is σ = 33115936. Its totient is φ = 4481568.

The previous prime is 13818589. The next prime is 13818617. The reversal of 13818612 is 21681831.

It is a self number, because there is not a number n which added to its sum of digits gives 13818612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13818617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15118 + ... + 16005.

Almost surely, 2^13818612 is an apocalyptic number.

13818612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13818612 is an abundant number, since it is smaller than the sum of its proper divisors (19297324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13818612 is a wasteful number, since it uses less digits than its factorization.

13818612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31167 (or 31165 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 13818612 is about 3717.3393711094. The cubic root of 13818612 is about 239.9688153926.

The spelling of 13818612 in words is "thirteen million, eight hundred eighteen thousand, six hundred twelve".