12013818 has 8 divisors (see below), whose sum is σ = 24027648. Its totient is φ = 4004604.

The previous prime is 12013787. The next prime is 12013847. The reversal of 12013818 is 81831021.

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

12013818 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001146 + ... + 1001157.

It is an arithmetic number, because the mean of its divisors is an integer number (3003456).

Almost surely, 2^12013818 is an apocalyptic number.

12013818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12013818 is a wasteful number, since it uses less digits than its factorization.

12013818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002308.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 12013818 is about 3466.0954978188. The cubic root of 12013818 is about 229.0306906992.

Adding to 12013818 its reverse (81831021), we get a palindrome (93844839).

The spelling of 12013818 in words is "twelve million, thirteen thousand, eight hundred eighteen".