2011556794 has 8 divisors (see below), whose sum is σ = 3249437940. Its totient is φ = 928410816.

The previous prime is 2011556791. The next prime is 2011556819. The reversal of 2011556794 is 4976551102.

It can be written as a sum of positive squares in 2 ways, for example, as 1427706225 + 583850569 = 37785^2 + 24163^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2011556791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38683759 + ... + 38683810.

Almost surely, 2^2011556794 is an apocalyptic number.

2011556794 is a deficient number, since it is larger than the sum of its proper divisors (1237881146).

2011556794 is a wasteful number, since it uses less digits than its factorization.

2011556794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77367584.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 2011556794 is about 44850.3823172111. The cubic root of 2011556794 is about 1262.3431652253.

The spelling of 2011556794 in words is "two billion, eleven million, five hundred fifty-six thousand, seven hundred ninety-four".