2111113189 has 2 divisors, whose sum is σ = 2111113190. Its totient is φ = 2111113188.

The previous prime is 2111113187. The next prime is 2111113223. The reversal of 2111113189 is 9813111112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1496916100 + 614197089 = 38690^2 + 24783^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111113189 - 2¹ = 2111113187 is a prime.

Together with 2111113187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111113187) 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 as a sum of consecutive naturals, namely, 1055556594 + 1055556595.

It is an arithmetic number, because the mean of its divisors is an integer number (1055556595).

Almost surely, 2^2111113189 is an apocalyptic number.

It is an amenable number.

2111113189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111113189 is an equidigital number, since it uses as much as digits as its factorization.

2111113189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 28.

The square root of 2111113189 is about 45946.8517855141. The cubic root of 2111113189 is about 1282.8341313074.

The spelling of 2111113189 in words is "two billion, one hundred eleven million, one hundred thirteen thousand, one hundred eighty-nine".