9504619961 has 2 divisors, whose sum is σ = 9504619962. Its totient is φ = 9504619960.

The previous prime is 9504619909. The next prime is 9504619967. The reversal of 9504619961 is 1699164059.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7426992400 + 2077627561 = 86180^2 + 45581^2 .

It is a cyclic number.

It is not a de Polignac number, because 9504619961 - 2⁶ = 9504619897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9504619967) 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, 4752309980 + 4752309981.

It is an arithmetic number, because the mean of its divisors is an integer number (4752309981).

Almost surely, 2^9504619961 is an apocalyptic number.

It is an amenable number.

9504619961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9504619961 is an equidigital number, since it uses as much as digits as its factorization.

9504619961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 9504619961 is about 97491.6404672729. The cubic root of 9504619961 is about 2118.2550582389.

The spelling of 9504619961 in words is "nine billion, five hundred four million, six hundred nineteen thousand, nine hundred sixty-one".