8131509741 has 16 divisors (see below), whose sum is σ = 11066526720. Its totient is φ = 5309429040.

The previous prime is 8131509707. The next prime is 8131509767. The reversal of 8131509741 is 1479051318.

It is not a de Polignac number, because 8131509741 - 2¹³ = 8131501549 is a prime.

It is a super-2 number, since 2×8131509741² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8131509741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131509641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36795 + ... + 132728.

It is an arithmetic number, because the mean of its divisors is an integer number (691657920).

Almost surely, 2^8131509741 is an apocalyptic number.

It is an amenable number.

8131509741 is a deficient number, since it is larger than the sum of its proper divisors (2935016979).

8131509741 is a wasteful number, since it uses less digits than its factorization.

8131509741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169856.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 8131509741 is about 90174.8842028644. The cubic root of 8131509741 is about 2010.8996361411.

The spelling of 8131509741 in words is "eight billion, one hundred thirty-one million, five hundred nine thousand, seven hundred forty-one".