9722731964 has 24 divisors (see below), whose sum is σ = 19014304176. Its totient is φ = 4311632000.

The previous prime is 9722731937. The next prime is 9722732011. The reversal of 9722731964 is 4691372279.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2692967 + ... + 2696574.

It is an arithmetic number, because the mean of its divisors is an integer number (792262674).

Almost surely, 2^9722731964 is an apocalyptic number.

It is an amenable number.

9722731964 is a deficient number, since it is larger than the sum of its proper divisors (9291572212).

9722731964 is a wasteful number, since it uses less digits than its factorization.

9722731964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389597 (or 5389595 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 50.

The square root of 9722731964 is about 98603.9145470402. The cubic root of 9722731964 is about 2134.3359085006.

The spelling of 9722731964 in words is "nine billion, seven hundred twenty-two million, seven hundred thirty-one thousand, nine hundred sixty-four".