109768189 has 2 divisors, whose sum is σ = 109768190. Its totient is φ = 109768188.

The previous prime is 109768163. The next prime is 109768223. The reversal of 109768189 is 981867901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 31304025 = 8858^2 + 5595^2 .

It is a cyclic number.

It is not a de Polignac number, because 109768189 - 2¹¹ = 109766141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109768289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54884094 + 54884095.

It is an arithmetic number, because the mean of its divisors is an integer number (54884095).

Almost surely, 2^109768189 is an apocalyptic number.

It is an amenable number.

109768189 is a deficient number, since it is larger than the sum of its proper divisors (1).

109768189 is an equidigital number, since it uses as much as digits as its factorization.

109768189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 109768189 is about 10477.0314975188. The cubic root of 109768189 is about 478.8051720804.

The spelling of 109768189 in words is "one hundred nine million, seven hundred sixty-eight thousand, one hundred eighty-nine".