120109189 has 2 divisors, whose sum is σ = 120109190. Its totient is φ = 120109188.

The previous prime is 120109181. The next prime is 120109193. The reversal of 120109189 is 981901021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100661089 + 19448100 = 10033^2 + 4410^2 .

It is a cyclic number.

It is not a de Polignac number, because 120109189 - 2³ = 120109181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120109189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120109181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60054594 + 60054595.

It is an arithmetic number, because the mean of its divisors is an integer number (60054595).

Almost surely, 2^120109189 is an apocalyptic number.

It is an amenable number.

120109189 is a deficient number, since it is larger than the sum of its proper divisors (1).

120109189 is an equidigital number, since it uses as much as digits as its factorization.

120109189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 120109189 is about 10959.4337901189. The cubic root of 120109189 is about 493.3919713089.

The spelling of 120109189 in words is "one hundred twenty million, one hundred nine thousand, one hundred eighty-nine".