849155189 has 2 divisors, whose sum is σ = 849155190. Its totient is φ = 849155188.

The previous prime is 849155179. The next prime is 849155207. The reversal of 849155189 is 981551948.

849155189 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., 721352164 + 127803025 = 26858^2 + 11305^2 .

It is a cyclic number.

It is not a de Polignac number, because 849155189 - 2⁴ = 849155173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849155159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424577594 + 424577595.

It is an arithmetic number, because the mean of its divisors is an integer number (424577595).

Almost surely, 2^849155189 is an apocalyptic number.

It is an amenable number.

849155189 is a deficient number, since it is larger than the sum of its proper divisors (1).

849155189 is an equidigital number, since it uses as much as digits as its factorization.

849155189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 50.

The square root of 849155189 is about 29140.2674833297. The cubic root of 849155189 is about 946.9543046765.

The spelling of 849155189 in words is "eight hundred forty-nine million, one hundred fifty-five thousand, one hundred eighty-nine".