11818885 has 16 divisors (see below), whose sum is σ = 15346800. Its totient is φ = 8686080.

The previous prime is 11818879. The next prime is 11818907. The reversal of 11818885 is 58881811.

11818885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 749956 + 11068929 = 866^2 + 3327^2 .

It is not a de Polignac number, because 11818885 - 2¹¹ = 11816837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22425 + ... + 22945.

It is an arithmetic number, because the mean of its divisors is an integer number (959175).

Almost surely, 2^11818885 is an apocalyptic number.

It is an amenable number.

11818885 is a deficient number, since it is larger than the sum of its proper divisors (3527915).

11818885 is a wasteful number, since it uses less digits than its factorization.

11818885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its digits is 20480, while the sum is 40.

The square root of 11818885 is about 3437.8605265485. The cubic root of 11818885 is about 227.7851996172.

The spelling of 11818885 in words is "eleven million, eight hundred eighteen thousand, eight hundred eighty-five".