2011279180 has 48 divisors (see below), whose sum is σ = 4479481440. Its totient is φ = 755944448.

The previous prime is 2011279159. The next prime is 2011279187. The reversal of 2011279180 is 819721102.

It is not an unprimeable number, because it can be changed into a prime (2011279187) 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 15 ways as a sum of consecutive naturals, for example, 217491 + ... + 226549.

It is an arithmetic number, because the mean of its divisors is an integer number (93322530).

Almost surely, 2^2011279180 is an apocalyptic number.

2011279180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011279180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239740720).

2011279180 is an abundant number, since it is smaller than the sum of its proper divisors (2468202260).

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

2011279180 is a wasteful number, since it uses less digits than its factorization.

2011279180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9738 (or 9736 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 2011279180 is about 44847.2873204166. The cubic root of 2011279180 is about 1262.2850907596.

The spelling of 2011279180 in words is "two billion, eleven million, two hundred seventy-nine thousand, one hundred eighty".