8102145589 has 2 divisors, whose sum is σ = 8102145590. Its totient is φ = 8102145588.

The previous prime is 8102145551. The next prime is 8102145593. The reversal of 8102145589 is 9855412018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6370753489 + 1731392100 = 79817^2 + 41610^2 .

It is a cyclic number.

It is not a de Polignac number, because 8102145589 - 2¹⁹ = 8101621301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8102175589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4051072794 + 4051072795.

It is an arithmetic number, because the mean of its divisors is an integer number (4051072795).

Almost surely, 2^8102145589 is an apocalyptic number.

It is an amenable number.

8102145589 is a deficient number, since it is larger than the sum of its proper divisors (1).

8102145589 is an equidigital number, since it uses as much as digits as its factorization.

8102145589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 8102145589 is about 90011.9191496326. The cubic root of 8102145589 is about 2008.4761590330.

The spelling of 8102145589 in words is "eight billion, one hundred two million, one hundred forty-five thousand, five hundred eighty-nine".