11806018 has 16 divisors (see below), whose sum is σ = 20583360. Its totient is φ = 4973616.

The previous prime is 11805979. The next prime is 11806019. The reversal of 11806018 is 81060811.

It is a happy number.

It is a super-2 number, since 2×11806018² = 278764122032648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11805983 and 11806001.

It is not an unprimeable number, because it can be changed into a prime (11806019) 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, 6321 + ... + 7972.

It is an arithmetic number, because the mean of its divisors is an integer number (1286460).

Almost surely, 2^11806018 is an apocalyptic number.

11806018 is a deficient number, since it is larger than the sum of its proper divisors (8777342).

11806018 is a wasteful number, since it uses less digits than its factorization.

11806018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14361.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 11806018 is about 3435.9886495738. The cubic root of 11806018 is about 227.7025077666.

Adding to 11806018 its reverse (81060811), we get a palindrome (92866829).

The spelling of 11806018 in words is "eleven million, eight hundred six thousand, eighteen".