2011644516 has 48 divisors (see below), whose sum is σ = 5381927936. Its totient is φ = 572876064.

The previous prime is 2011644511. The next prime is 2011644517. The reversal of 2011644516 is 6154461102.

It is not an unprimeable number, because it can be changed into a prime (2011644511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13216 + ... + 64791.

Almost surely, 2^2011644516 is an apocalyptic number.

It is an amenable number.

2011644516 is an abundant number, since it is smaller than the sum of its proper divisors (3370283420).

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

2011644516 is a wasteful number, since it uses less digits than its factorization.

2011644516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78328 (or 78326 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2011644516 is about 44851.3602469312. The cubic root of 2011644516 is about 1262.3615148037.

The spelling of 2011644516 in words is "two billion, eleven million, six hundred forty-four thousand, five hundred sixteen".