8131726741 has 4 divisors (see below), whose sum is σ = 8243120332. Its totient is φ = 8020333152.

The previous prime is 8131726717. The next prime is 8131726747. The reversal of 8131726741 is 1476271318.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1476271318 = 2 ⋅738135659.

It can be written as a sum of positive squares in 2 ways, for example, as 2454707025 + 5677019716 = 49545^2 + 75346^2 .

It is a cyclic number.

It is not a de Polignac number, because 8131726741 - 2²¹ = 8129629589 is a prime.

It is a super-2 number, since 2×8131726741² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8131726694 and 8131726703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131726747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55696686 + ... + 55696831.

It is an arithmetic number, because the mean of its divisors is an integer number (2060780083).

Almost surely, 2^8131726741 is an apocalyptic number.

It is an amenable number.

8131726741 is a deficient number, since it is larger than the sum of its proper divisors (111393591).

8131726741 is a wasteful number, since it uses less digits than its factorization.

8131726741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111393590.

The product of its digits is 56448, while the sum is 40.

The square root of 8131726741 is about 90176.0874123512. The cubic root of 8131726741 is about 2010.9175238131.

The spelling of 8131726741 in words is "eight billion, one hundred thirty-one million, seven hundred twenty-six thousand, seven hundred forty-one".