11818218 has 16 divisors (see below), whose sum is σ = 23846976. Its totient is φ = 3904320.

The previous prime is 11818217. The next prime is 11818229. The reversal of 11818218 is 81281811.

11818218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11818211) 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, 8038 + ... + 9393.

It is an arithmetic number, because the mean of its divisors is an integer number (1490436).

Almost surely, 2^11818218 is an apocalyptic number.

11818218 is an abundant number, since it is smaller than the sum of its proper divisors (12028758).

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

11818218 is a wasteful number, since it uses less digits than its factorization.

11818218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17549.

The product of its digits is 1024, while the sum is 30.

The square root of 11818218 is about 3437.7635171722. The cubic root of 11818218 is about 227.7809145094.

It can be divided in two parts, 118 and 18218, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 11818218 in words is "eleven million, eight hundred eighteen thousand, two hundred eighteen".