11611818 has 24 divisors (see below), whose sum is σ = 25506468. Its totient is φ = 3817152.

The previous prime is 11611813. The next prime is 11611829. The reversal of 11611818 is 81811611.

11611818 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 2 ways, for example, as 9715689 + 1896129 = 3117^2 + 1377^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11611791 and 11611800.

It is not an unprimeable number, because it can be changed into a prime (11611813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3105 + ... + 5732.

Almost surely, 2^11611818 is an apocalyptic number.

11611818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11611818 is an abundant number, since it is smaller than the sum of its proper divisors (13894650).

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

11611818 is a wasteful number, since it uses less digits than its factorization.

11611818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8918 (or 8915 counting only the distinct ones).

The product of its digits is 384, while the sum is 27.

The square root of 11611818 is about 3407.6117736620. The cubic root of 11611818 is about 226.4470879137.

The spelling of 11611818 in words is "eleven million, six hundred eleven thousand, eight hundred eighteen".