186882161 has 2 divisors, whose sum is σ = 186882162. Its totient is φ = 186882160.

The previous prime is 186882149. The next prime is 186882181. The reversal of 186882161 is 161288681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177395761 + 9486400 = 13319^2 + 3080^2 .

It is an emirp because it is prime and its reverse (161288681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 186882161 - 2⁶ = 186882097 is a prime.

It is not a weakly prime, because it can be changed into another prime (186882121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93441080 + 93441081.

It is an arithmetic number, because the mean of its divisors is an integer number (93441081).

Almost surely, 2^186882161 is an apocalyptic number.

It is an amenable number.

186882161 is a deficient number, since it is larger than the sum of its proper divisors (1).

186882161 is an equidigital number, since it uses as much as digits as its factorization.

186882161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 41.

The square root of 186882161 is about 13670.4850316293. The cubic root of 186882161 is about 571.7277636263.

The spelling of 186882161 in words is "one hundred eighty-six million, eight hundred eighty-two thousand, one hundred sixty-one".