86802187189 has 2 divisors, whose sum is σ = 86802187190. Its totient is φ = 86802187188.

The previous prime is 86802187139. The next prime is 86802187193. The reversal of 86802187189 is 98178120868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85932232164 + 869955025 = 293142^2 + 29495^2 .

It is a cyclic number.

It is not a de Polignac number, because 86802187189 - 2¹⁹ = 86801662901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86802187139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43401093594 + 43401093595.

It is an arithmetic number, because the mean of its divisors is an integer number (43401093595).

Almost surely, 2^86802187189 is an apocalyptic number.

It is an amenable number.

86802187189 is a deficient number, since it is larger than the sum of its proper divisors (1).

86802187189 is an equidigital number, since it uses as much as digits as its factorization.

86802187189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3096576, while the sum is 58.

The spelling of 86802187189 in words is "eighty-six billion, eight hundred two million, one hundred eighty-seven thousand, one hundred eighty-nine".