9637705081 has 2 divisors, whose sum is σ = 9637705082. Its totient is φ = 9637705080.

The previous prime is 9637705067. The next prime is 9637705087. The reversal of 9637705081 is 1805077369.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8205461056 + 1432244025 = 90584^2 + 37845^2 .

It is a cyclic number.

It is not a de Polignac number, because 9637705081 - 2¹⁹ = 9637180793 is a prime.

It is a super-2 number, since 2×9637705081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9637705087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4818852540 + 4818852541.

It is an arithmetic number, because the mean of its divisors is an integer number (4818852541).

Almost surely, 2^9637705081 is an apocalyptic number.

It is an amenable number.

9637705081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9637705081 is an equidigital number, since it uses as much as digits as its factorization.

9637705081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 9637705081 is about 98171.8140863252. The cubic root of 9637705081 is about 2128.0959775932.

The spelling of 9637705081 in words is "nine billion, six hundred thirty-seven million, seven hundred five thousand, eighty-one".