2013805812 has 12 divisors (see below), whose sum is σ = 4698880256. Its totient is φ = 671268600.

The previous prime is 2013805793. The next prime is 2013805837. The reversal of 2013805812 is 2185083102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2013805812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83908564 + ... + 83908587.

Almost surely, 2^2013805812 is an apocalyptic number.

It is an amenable number.

2013805812 is an abundant number, since it is smaller than the sum of its proper divisors (2685074444).

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

2013805812 is a wasteful number, since it uses less digits than its factorization.

2013805812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167817158 (or 167817156 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2013805812 is about 44875.4477637828. The cubic root of 2013805812 is about 1262.8134436198.

Adding to 2013805812 its reverse (2185083102), we get a palindrome (4198888914).

The spelling of 2013805812 in words is "two billion, thirteen million, eight hundred five thousand, eight hundred twelve".