9641968019 has 4 divisors (see below), whose sum is σ = 10149440040. Its totient is φ = 9134496000.

The previous prime is 9641968009. The next prime is 9641968067. The reversal of 9641968019 is 9108691469.

It is a happy number.

9641968019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9641968019 - 2¹² = 9641963923 is a prime.

It is a super-2 number, since 2×9641968019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9641968009) 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 in 3 ways as a sum of consecutive naturals, for example, 253735982 + ... + 253736019.

It is an arithmetic number, because the mean of its divisors is an integer number (2537360010).

Almost surely, 2^9641968019 is an apocalyptic number.

9641968019 is a deficient number, since it is larger than the sum of its proper divisors (507472021).

9641968019 is a wasteful number, since it uses less digits than its factorization.

9641968019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507472020.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 9641968019 is about 98193.5233047475. The cubic root of 9641968019 is about 2128.4096969520.

The spelling of 9641968019 in words is "nine billion, six hundred forty-one million, nine hundred sixty-eight thousand, nineteen".