2081177856 has 108 divisors (see below), whose sum is σ = 6073402608. Its totient is φ = 685304832.

The previous prime is 2081177851. The next prime is 2081177899. The reversal of 2081177856 is 6587711802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2081177851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185791 + ... + 196673.

Almost surely, 2^2081177856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2081177856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3036701304).

2081177856 is an abundant number, since it is smaller than the sum of its proper divisors (3992224752).

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

2081177856 is a wasteful number, since it uses less digits than its factorization.

2081177856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10988 (or 10971 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 2081177856 is about 45619.9282770151. The cubic root of 2081177856 is about 1276.7417652977.

The spelling of 2081177856 in words is "two billion, eighty-one million, one hundred seventy-seven thousand, eight hundred fifty-six".