11918612 has 6 divisors (see below), whose sum is σ = 20857578. Its totient is φ = 5959304.

The previous prime is 11918603. The next prime is 11918617. The reversal of 11918612 is 21681911.

It can be written as a sum of positive squares in only one way, i.e., 7862416 + 4056196 = 2804^2 + 2014^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11918617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489823 + ... + 1489830.

It is an arithmetic number, because the mean of its divisors is an integer number (3476263).

Almost surely, 2^11918612 is an apocalyptic number.

It is an amenable number.

11918612 is a deficient number, since it is larger than the sum of its proper divisors (8938966).

11918612 is a wasteful number, since it uses less digits than its factorization.

11918612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979657 (or 2979655 counting only the distinct ones).

The product of its digits is 864, while the sum is 29.

The square root of 11918612 is about 3452.3342827716. The cubic root of 11918612 is about 228.4240850237.

The spelling of 11918612 in words is "eleven million, nine hundred eighteen thousand, six hundred twelve".