9643794858916 has 9 divisors (see below), whose sum is σ = 16876651872171. Its totient is φ = 4821894324012.

The previous prime is 9643794858913. The next prime is 9643794858923. The reversal of 9643794858916 is 6198584973469.

The square root of 9643794858916 is 3105446.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9643794858913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5434531 + ... + 6987253.

Almost surely, 2^{9643794858916} is an apocalyptic number.

9643794858916 is the 3105446-th square number.

It is an amenable number.

9643794858916 is a deficient number, since it is larger than the sum of its proper divisors (7232857013255).

9643794858916 is an frugal number, since it uses more digits than its factorization.

9643794858916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105450 (or 1552725 counting only the distinct ones).

The product of its digits is 2821754880, while the sum is 79.

The spelling of 9643794858916 in words is "nine trillion, six hundred forty-three billion, seven hundred ninety-four million, eight hundred fifty-eight thousand, nine hundred sixteen".