2180911 has 2 divisors, whose sum is σ = 2180912. Its totient is φ = 2180910.

The previous prime is 2180873. The next prime is 2180921. The reversal of 2180911 is 1190812.

2180911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090455 + 1090456.

It is an arithmetic number, because the mean of its divisors is an integer number (1090456).

2^2180911 is an apocalyptic number.

2180911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180911 is an equidigital number, since it uses as much as digits as its factorization.

2180911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 2180911 is about 1476.7907773276. The cubic root of 2180911 is about 129.6818849168.

Subtracting from 2180911 its reverse (1190812), we obtain a palindrome (990099).

The spelling of 2180911 in words is "two million, one hundred eighty thousand, nine hundred eleven".