985166141 has 2 divisors, whose sum is σ = 985166142. Its totient is φ = 985166140.

The previous prime is 985166111. The next prime is 985166183. The reversal of 985166141 is 141661589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 730891225 + 254274916 = 27035^2 + 15946^2 .

It is an emirp because it is prime and its reverse (141661589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985166141 - 2¹⁴ = 985149757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985166101) 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, 492583070 + 492583071.

It is an arithmetic number, because the mean of its divisors is an integer number (492583071).

Almost surely, 2^985166141 is an apocalyptic number.

It is an amenable number.

985166141 is a deficient number, since it is larger than the sum of its proper divisors (1).

985166141 is an equidigital number, since it uses as much as digits as its factorization.

985166141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 985166141 is about 31387.3563875647. The cubic root of 985166141 is about 995.0307275680.

The spelling of 985166141 in words is "nine hundred eighty-five million, one hundred sixty-six thousand, one hundred forty-one".