9645271964 has 6 divisors (see below), whose sum is σ = 16879225944. Its totient is φ = 4822635980.

The previous prime is 9645271943. The next prime is 9645272009. The reversal of 9645271964 is 4691725469.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1205658992 + ... + 1205658999.

It is an arithmetic number, because the mean of its divisors is an integer number (2813204324).

Almost surely, 2^9645271964 is an apocalyptic number.

It is an amenable number.

9645271964 is a deficient number, since it is larger than the sum of its proper divisors (7233953980).

9645271964 is a wasteful number, since it uses less digits than its factorization.

9645271964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411317995 (or 2411317993 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 9645271964 is about 98210.3455039234. The cubic root of 9645271964 is about 2128.6527782225.

The spelling of 9645271964 in words is "nine billion, six hundred forty-five million, two hundred seventy-one thousand, nine hundred sixty-four".