9648778453 has 2 divisors, whose sum is σ = 9648778454. Its totient is φ = 9648778452.

The previous prime is 9648778441. The next prime is 9648778457. The reversal of 9648778453 is 3548778469.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5526881649 + 4121896804 = 74343^2 + 64202^2 .

It is a cyclic number.

It is not a de Polignac number, because 9648778453 - 2²¹ = 9646681301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9648778391 and 9648778400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9648778457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4824389226 + 4824389227.

It is an arithmetic number, because the mean of its divisors is an integer number (4824389227).

Almost surely, 2^9648778453 is an apocalyptic number.

It is an amenable number.

9648778453 is a deficient number, since it is larger than the sum of its proper divisors (1).

9648778453 is an equidigital number, since it uses as much as digits as its factorization.

9648778453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 61.

The square root of 9648778453 is about 98228.1958146438. The cubic root of 9648778453 is about 2128.9107005583.

The spelling of 9648778453 in words is "nine billion, six hundred forty-eight million, seven hundred seventy-eight thousand, four hundred fifty-three".