9546736681 has 2 divisors, whose sum is σ = 9546736682. Its totient is φ = 9546736680.

The previous prime is 9546736673. The next prime is 9546736687. The reversal of 9546736681 is 1866376459.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9514246681 + 32490000 = 97541^2 + 5700^2 .

It is a cyclic number.

It is not a de Polignac number, because 9546736681 - 2³ = 9546736673 is a prime.

It is a super-2 number, since 2×9546736681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9546736687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4773368340 + 4773368341.

It is an arithmetic number, because the mean of its divisors is an integer number (4773368341).

Almost surely, 2^9546736681 is an apocalyptic number.

It is an amenable number.

9546736681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9546736681 is an equidigital number, since it uses as much as digits as its factorization.

9546736681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 55.

The square root of 9546736681 is about 97707.4034093630. The cubic root of 9546736681 is about 2121.3792408119.

The spelling of 9546736681 in words is "nine billion, five hundred forty-six million, seven hundred thirty-six thousand, six hundred eighty-one".