9631138047849 has 8 divisors (see below), whose sum is σ = 14268352663520. Its totient is φ = 6420758698548.

The previous prime is 9631138047829. The next prime is 9631138047901. The reversal of 9631138047849 is 9487408311369.

9631138047849 is a `hidden beast` number, since 9 + 6 + 3 + 113 + 8 + 0 + 478 + 49 = 666.

It is not a de Polignac number, because 9631138047849 - 2¹² = 9631138043753 is a prime.

It is a super-2 number, since 2×9631138047849² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9631138047829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178354408267 + ... + 178354408320.

It is an arithmetic number, because the mean of its divisors is an integer number (1783544082940).

Almost surely, 2^{9631138047849} is an apocalyptic number.

It is an amenable number.

9631138047849 is a deficient number, since it is larger than the sum of its proper divisors (4637214615671).

9631138047849 is a wasteful number, since it uses less digits than its factorization.

9631138047849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356708816596 (or 356708816590 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 9631138047849 in words is "nine trillion, six hundred thirty-one billion, one hundred thirty-eight million, forty-seven thousand, eight hundred forty-nine".