2291056911 has 48 divisors (see below), whose sum is σ = 3893853600. Its totient is φ = 1279733760.

The previous prime is 2291056903. The next prime is 2291056919. The reversal of 2291056911 is 1196501922.

2291056911 is a `hidden beast` number, since 2 + 2 + 91 + 0 + 569 + 1 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2291056903) and next prime (2291056919).

It is not a de Polignac number, because 2291056911 - 2³ = 2291056903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291056919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1349215 + ... + 1350911.

It is an arithmetic number, because the mean of its divisors is an integer number (81121950).

Almost surely, 2^2291056911 is an apocalyptic number.

2291056911 is a deficient number, since it is larger than the sum of its proper divisors (1602796689).

2291056911 is a wasteful number, since it uses less digits than its factorization.

2291056911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2773 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 2291056911 is about 47864.9862738934. The cubic root of 2291056911 is about 1318.2930398052.

The spelling of 2291056911 in words is "two billion, two hundred ninety-one million, fifty-six thousand, nine hundred eleven".