86510189 has 2 divisors, whose sum is σ = 86510190. Its totient is φ = 86510188.

The previous prime is 86510141. The next prime is 86510197. The reversal of 86510189 is 98101568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83814025 + 2696164 = 9155^2 + 1642^2 .

It is a cyclic number.

It is not a de Polignac number, because 86510189 - 2²⁴ = 69732973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86510089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43255094 + 43255095.

It is an arithmetic number, because the mean of its divisors is an integer number (43255095).

Almost surely, 2^86510189 is an apocalyptic number.

It is an amenable number.

86510189 is a deficient number, since it is larger than the sum of its proper divisors (1).

86510189 is an equidigital number, since it uses as much as digits as its factorization.

86510189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 86510189 is about 9301.0853667731. The cubic root of 86510189 is about 442.2716350679.

The spelling of 86510189 in words is "eighty-six million, five hundred ten thousand, one hundred eighty-nine".