2011738878 has 12 divisors (see below), whose sum is σ = 4358767608. Its totient is φ = 670579620.

The previous prime is 2011738849. The next prime is 2011738909. The reversal of 2011738878 is 8788371102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55881618 + ... + 55881653.

It is an arithmetic number, because the mean of its divisors is an integer number (363230634).

Almost surely, 2^2011738878 is an apocalyptic number.

2011738878 is an abundant number, since it is smaller than the sum of its proper divisors (2347028730).

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

2011738878 is a wasteful number, since it uses less digits than its factorization.

2011738878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111763279 (or 111763276 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 2011738878 is about 44852.4121759354. The cubic root of 2011738878 is about 1262.3812527335.

The spelling of 2011738878 in words is "two billion, eleven million, seven hundred thirty-eight thousand, eight hundred seventy-eight".