9453630661 has 2 divisors, whose sum is σ = 9453630662. Its totient is φ = 9453630660.

The previous prime is 9453630653. The next prime is 9453630673. The reversal of 9453630661 is 1660363549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7548308161 + 1905322500 = 86881^2 + 43650^2 .

It is a cyclic number.

It is not a de Polignac number, because 9453630661 - 2³ = 9453630653 is a prime.

It is a super-2 number, since 2×9453630661² (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 (9453630601) 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, 4726815330 + 4726815331.

It is an arithmetic number, because the mean of its divisors is an integer number (4726815331).

Almost surely, 2^9453630661 is an apocalyptic number.

It is an amenable number.

9453630661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9453630661 is an equidigital number, since it uses as much as digits as its factorization.

9453630661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 9453630661 is about 97229.7827879915. The cubic root of 9453630661 is about 2114.4603400071.

The spelling of 9453630661 in words is "nine billion, four hundred fifty-three million, six hundred thirty thousand, six hundred sixty-one".