3081949812 has 36 divisors (see below), whose sum is σ = 7792344196. Its totient is φ = 1027071360.

The previous prime is 3081949789. The next prime is 3081949859. The reversal of 3081949812 is 2189491803.

It can be written as a sum of positive squares in 2 ways, for example, as 1529904996 + 1552044816 = 39114^2 + 39396^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204438 + ... + 218994.

Almost surely, 2^3081949812 is an apocalyptic number.

It is an amenable number.

3081949812 is an abundant number, since it is smaller than the sum of its proper divisors (4710394384).

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

3081949812 is a wasteful number, since it uses less digits than its factorization.

3081949812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20448 (or 20443 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 3081949812 is about 55515.3115095286. The cubic root of 3081949812 is about 1455.2642280610.

The spelling of 3081949812 in words is "three billion, eighty-one million, nine hundred forty-nine thousand, eight hundred twelve".