9650053981 has 2 divisors, whose sum is σ = 9650053982. Its totient is φ = 9650053980.

The previous prime is 9650053967. The next prime is 9650053993. The reversal of 9650053981 is 1893500569.

9650053981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8439361956 + 1210692025 = 91866^2 + 34795^2 .

It is a cyclic number.

It is not a de Polignac number, because 9650053981 - 2¹¹ = 9650051933 is a prime.

It is a super-2 number, since 2×9650053981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9650053901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4825026990 + 4825026991.

It is an arithmetic number, because the mean of its divisors is an integer number (4825026991).

Almost surely, 2^9650053981 is an apocalyptic number.

It is an amenable number.

9650053981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9650053981 is an equidigital number, since it uses as much as digits as its factorization.

9650053981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 9650053981 is about 98234.6882776140. The cubic root of 9650053981 is about 2129.0045074435.

The spelling of 9650053981 in words is "nine billion, six hundred fifty million, fifty-three thousand, nine hundred eighty-one".