986111081 has 2 divisors, whose sum is σ = 986111082. Its totient is φ = 986111080.

The previous prime is 986111059. The next prime is 986111107. The reversal of 986111081 is 180111689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 984955456 + 1155625 = 31384^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 986111081 - 2¹⁸ = 985848937 is a prime.

It is a super-3 number, since 3×986111081³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (986111051) 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, 493055540 + 493055541.

It is an arithmetic number, because the mean of its divisors is an integer number (493055541).

Almost surely, 2^986111081 is an apocalyptic number.

It is an amenable number.

986111081 is a deficient number, since it is larger than the sum of its proper divisors (1).

986111081 is an equidigital number, since it uses as much as digits as its factorization.

986111081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 35.

The square root of 986111081 is about 31402.4056562551. The cubic root of 986111081 is about 995.3487598400.

The spelling of 986111081 in words is "nine hundred eighty-six million, one hundred eleven thousand, eighty-one".