9641966964 has 36 divisors (see below), whose sum is σ = 26171054784. Its totient is φ = 2754847536.

The previous prime is 9641966963. The next prime is 9641966989. The reversal of 9641966964 is 4696691469.

It is a junction number, because it is equal to n+sod(n) for n = 9641966898 and 9641966907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9641966963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8198364 + ... + 8199539.

It is an arithmetic number, because the mean of its divisors is an integer number (726973744).

Almost surely, 2^9641966964 is an apocalyptic number.

It is an amenable number.

9641966964 is an abundant number, since it is smaller than the sum of its proper divisors (16529087820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9641966964 is a wasteful number, since it uses less digits than its factorization.

9641966964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16397924 (or 16397915 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 60.

The square root of 9641966964 is about 98193.5179327027. The cubic root of 9641966964 is about 2128.4096193236.

The spelling of 9641966964 in words is "nine billion, six hundred forty-one million, nine hundred sixty-six thousand, nine hundred sixty-four".