8371285861 has 2 divisors, whose sum is σ = 8371285862. Its totient is φ = 8371285860.

The previous prime is 8371285831. The next prime is 8371285891. The reversal of 8371285861 is 1685821738.

It is a balanced prime because it is at equal distance from previous prime (8371285831) and next prime (8371285891).

It can be written as a sum of positive squares in only one way, i.e., 7958424100 + 412861761 = 89210^2 + 20319^2 .

It is a cyclic number.

It is not a de Polignac number, because 8371285861 - 2¹³ = 8371277669 is a prime.

It is a super-2 number, since 2×8371285861² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8371285831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4185642930 + 4185642931.

It is an arithmetic number, because the mean of its divisors is an integer number (4185642931).

Almost surely, 2^8371285861 is an apocalyptic number.

It is an amenable number.

8371285861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8371285861 is an equidigital number, since it uses as much as digits as its factorization.

8371285861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 49.

The square root of 8371285861 is about 91494.7313291864. The cubic root of 8371285861 is about 2030.4738037605.

The spelling of 8371285861 in words is "eight billion, three hundred seventy-one million, two hundred eighty-five thousand, eight hundred sixty-one".