9657189671 has 2 divisors, whose sum is σ = 9657189672. Its totient is φ = 9657189670.

The previous prime is 9657189623. The next prime is 9657189673. The reversal of 9657189671 is 1769817569.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9657189671 - 2¹⁴ = 9657173287 is a prime.

It is a super-2 number, since 2×9657189671² (a number of 21 digits) contains 22 as substring.

Together with 9657189673, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9657189671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9657189673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4828594835 + 4828594836.

It is an arithmetic number, because the mean of its divisors is an integer number (4828594836).

Almost surely, 2^9657189671 is an apocalyptic number.

9657189671 is a deficient number, since it is larger than the sum of its proper divisors (1).

9657189671 is an equidigital number, since it uses as much as digits as its factorization.

9657189671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 59.

The square root of 9657189671 is about 98271.0011702333. The cubic root of 9657189671 is about 2129.5291391610.

The spelling of 9657189671 in words is "nine billion, six hundred fifty-seven million, one hundred eighty-nine thousand, six hundred seventy-one".