2011977852 has 12 divisors (see below), whose sum is σ = 4694615016. Its totient is φ = 670659280.

The previous prime is 2011977839. The next prime is 2011977853. The reversal of 2011977852 is 2587791102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011977853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83832399 + ... + 83832422.

It is an arithmetic number, because the mean of its divisors is an integer number (391217918).

Almost surely, 2^2011977852 is an apocalyptic number.

It is an amenable number.

2011977852 is an abundant number, since it is smaller than the sum of its proper divisors (2682637164).

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

2011977852 is a wasteful number, since it uses less digits than its factorization.

2011977852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167664828 (or 167664826 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 2011977852 is about 44855.0761007046. The cubic root of 2011977852 is about 1262.4312367476.

The spelling of 2011977852 in words is "two billion, eleven million, nine hundred seventy-seven thousand, eight hundred fifty-two".