11918012 has 24 divisors (see below), whose sum is σ = 21676032. Its totient is φ = 5727600.

The previous prime is 11917993. The next prime is 11918051. The reversal of 11918012 is 21081911.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 27437 + ... + 27867.

It is an arithmetic number, because the mean of its divisors is an integer number (903168).

Almost surely, 2^11918012 is an apocalyptic number.

It is an amenable number.

11918012 is a deficient number, since it is larger than the sum of its proper divisors (9758020).

11918012 is a wasteful number, since it uses less digits than its factorization.

11918012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11918012 is about 3452.2473839515. The cubic root of 11918012 is about 228.4202518942.

Adding to 11918012 its reverse (21081911), we get a palindrome (32999923).

The spelling of 11918012 in words is "eleven million, nine hundred eighteen thousand, twelve".