18812012 has 6 divisors (see below), whose sum is σ = 32921028. Its totient is φ = 9406004.

The previous prime is 18811997. The next prime is 18812051. The reversal of 18812012 is 21021881.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2351498 + ... + 2351505.

It is an arithmetic number, because the mean of its divisors is an integer number (5486838).

Almost surely, 2^18812012 is an apocalyptic number.

It is an amenable number.

18812012 is a deficient number, since it is larger than the sum of its proper divisors (14109016).

18812012 is a wasteful number, since it uses less digits than its factorization.

18812012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703007 (or 4703005 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 18812012 is about 4337.2816371548. The cubic root of 18812012 is about 265.9571981558.

Adding to 18812012 its reverse (21021881), we get a palindrome (39833893).

The spelling of 18812012 in words is "eighteen million, eight hundred twelve thousand, twelve".