8256490189 has 2 divisors, whose sum is σ = 8256490190. Its totient is φ = 8256490188.

The previous prime is 8256490163. The next prime is 8256490213. The reversal of 8256490189 is 9810946528.

8256490189 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7829241289 + 427248900 = 88483^2 + 20670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8256490189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8256490129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128245094 + 4128245095.

It is an arithmetic number, because the mean of its divisors is an integer number (4128245095).

Almost surely, 2^8256490189 is an apocalyptic number.

It is an amenable number.

8256490189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8256490189 is an equidigital number, since it uses as much as digits as its factorization.

8256490189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 8256490189 is about 90865.2309136999. The cubic root of 8256490189 is about 2021.1497383244.

The spelling of 8256490189 in words is "eight billion, two hundred fifty-six million, four hundred ninety thousand, one hundred eighty-nine".