3871398361 has 2 divisors, whose sum is σ = 3871398362. Its totient is φ = 3871398360.

The previous prime is 3871398359. The next prime is 3871398379. The reversal of 3871398361 is 1638931783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2338206025 + 1533192336 = 48355^2 + 39156^2 .

It is a cyclic number.

It is not a de Polignac number, because 3871398361 - 2¹ = 3871398359 is a prime.

Together with 3871398359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3871398161) 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, 1935699180 + 1935699181.

It is an arithmetic number, because the mean of its divisors is an integer number (1935699181).

Almost surely, 2^3871398361 is an apocalyptic number.

It is an amenable number.

3871398361 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871398361 is an equidigital number, since it uses as much as digits as its factorization.

3871398361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 3871398361 is about 62220.5622041460. The cubic root of 3871398361 is about 1570.2035465740.

The spelling of 3871398361 in words is "three billion, eight hundred seventy-one million, three hundred ninety-eight thousand, three hundred sixty-one".