871451641 has 2 divisors, whose sum is σ = 871451642. Its totient is φ = 871451640.

The previous prime is 871451629. The next prime is 871451677. The reversal of 871451641 is 146154178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865595241 + 5856400 = 29421^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 871451641 - 2¹⁹ = 870927353 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 871451641.

It is not a weakly prime, because it can be changed into another prime (871451341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435725820 + 435725821.

It is an arithmetic number, because the mean of its divisors is an integer number (435725821).

Almost surely, 2^871451641 is an apocalyptic number.

It is an amenable number.

871451641 is a deficient number, since it is larger than the sum of its proper divisors (1).

871451641 is an equidigital number, since it uses as much as digits as its factorization.

871451641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 871451641 is about 29520.3597708429. The cubic root of 871451641 is about 955.1709318225.

The spelling of 871451641 in words is "eight hundred seventy-one million, four hundred fifty-one thousand, six hundred forty-one".