11081818 has 16 divisors (see below), whose sum is σ = 18720000. Its totient is φ = 4874400.

The previous prime is 11081803. The next prime is 11081827. The reversal of 11081818 is 81818011.

11081818 is a modest number, since divided by 1818 gives 1108 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7443 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (1170000).

Almost surely, 2^11081818 is an apocalyptic number.

11081818 is a deficient number, since it is larger than the sum of its proper divisors (7638182).

11081818 is a wasteful number, since it uses less digits than its factorization.

11081818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16293.

The product of its (nonzero) digits is 512, while the sum is 28.

The square root of 11081818 is about 3328.9364668014. The cubic root of 11081818 is about 222.9480463739.

Adding to 11081818 its reverse (81818011), we get a palindrome (92899829).

It can be divided in two parts, 1108 and 1818, that added together give a triangular number (2926 = T₇₆).

The spelling of 11081818 in words is "eleven million, eighty-one thousand, eight hundred eighteen".