9643645532 has 12 divisors (see below), whose sum is σ = 16899221640. Its totient is φ = 4815296496.

The previous prime is 9643645519. The next prime is 9643645591. The reversal of 9643645532 is 2355463469.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628243 + ... + 1634154.

It is an arithmetic number, because the mean of its divisors is an integer number (1408268470).

Almost surely, 2^9643645532 is an apocalyptic number.

It is an amenable number.

9643645532 is a deficient number, since it is larger than the sum of its proper divisors (7255576108).

9643645532 is a wasteful number, since it uses less digits than its factorization.

9643645532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263140 (or 3263138 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 47.

The square root of 9643645532 is about 98202.0648051761. The cubic root of 9643645532 is about 2128.5331236178.

The spelling of 9643645532 in words is "nine billion, six hundred forty-three million, six hundred forty-five thousand, five hundred thirty-two".