7871415841 has 3 divisors (see below), whose sum is σ = 7871504563. Its totient is φ = 7871327120.

The previous prime is 7871415767. The next prime is 7871415847. The reversal of 7871415841 is 1485141787.

The square root of 7871415841 is 88721.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1485141787 = 137 ⋅10840451.

It can be written as a sum of positive squares in only one way, i.e., 2675889441 + 5195526400 = 51729^2 + 72080^2 .

It is not a de Polignac number, because 7871415841 - 2⁹ = 7871415329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7871415791 and 7871415800.

It is not an unprimeable number, because it can be changed into a prime (7871415847) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 44361 + ... + 133081.

Almost surely, 2^7871415841 is an apocalyptic number.

7871415841 is the 88721-st square number.

7871415841 is the 44361-st centered octagonal number.

It is an amenable number.

7871415841 is a deficient number, since it is larger than the sum of its proper divisors (88722).

7871415841 is an frugal number, since it uses more digits than its factorization.

7871415841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177442 (or 88721 counting only the distinct ones).

The product of its digits is 250880, while the sum is 46.

The cubic root of 7871415841 is about 1989.2267258978.

The spelling of 7871415841 in words is "seven billion, eight hundred seventy-one million, four hundred fifteen thousand, eight hundred forty-one".