9671538943 has 4 divisors (see below), whose sum is σ = 10550769768. Its totient is φ = 8792308120.

The previous prime is 9671538869. The next prime is 9671538949. The reversal of 9671538943 is 3498351769.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9671538943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9671538949) 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, 439615396 + ... + 439615417.

It is an arithmetic number, because the mean of its divisors is an integer number (2637692442).

Almost surely, 2^9671538943 is an apocalyptic number.

9671538943 is a deficient number, since it is larger than the sum of its proper divisors (879230825).

9671538943 is a wasteful number, since it uses less digits than its factorization.

9671538943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879230824.

The product of its digits is 4898880, while the sum is 55.

The square root of 9671538943 is about 98343.9827493274. The cubic root of 9671538943 is about 2130.5833475369.

The spelling of 9671538943 in words is "nine billion, six hundred seventy-one million, five hundred thirty-eight thousand, nine hundred forty-three".