8520788189 has 2 divisors, whose sum is σ = 8520788190. Its totient is φ = 8520788188.

The previous prime is 8520788167. The next prime is 8520788191. The reversal of 8520788189 is 9818870258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6945888964 + 1574899225 = 83342^2 + 39685^2 .

It is a cyclic number.

It is not a de Polignac number, because 8520788189 - 2²⁸ = 8252352733 is a prime.

Together with 8520788191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520788119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260394094 + 4260394095.

It is an arithmetic number, because the mean of its divisors is an integer number (4260394095).

Almost surely, 2^8520788189 is an apocalyptic number.

It is an amenable number.

8520788189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520788189 is an equidigital number, since it uses as much as digits as its factorization.

8520788189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2580480, while the sum is 56.

The square root of 8520788189 is about 92308.1155099594. The cubic root of 8520788189 is about 2042.4899262462.

The spelling of 8520788189 in words is "eight billion, five hundred twenty million, seven hundred eighty-eight thousand, one hundred eighty-nine".