2189100917 has 2 divisors, whose sum is σ = 2189100918. Its totient is φ = 2189100916.

The previous prime is 2189100911. The next prime is 2189100973. The reversal of 2189100917 is 7190019812.

2189100917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1917213796 + 271887121 = 43786^2 + 16489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189100917 - 2¹⁰ = 2189099893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189100911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094550458 + 1094550459.

It is an arithmetic number, because the mean of its divisors is an integer number (1094550459).

Almost surely, 2^2189100917 is an apocalyptic number.

It is an amenable number.

2189100917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189100917 is an equidigital number, since it uses as much as digits as its factorization.

2189100917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 2189100917 is about 46787.8287271380. The cubic root of 2189100917 is about 1298.4401245109.

The spelling of 2189100917 in words is "two billion, one hundred eighty-nine million, one hundred thousand, nine hundred seventeen".