9645534473 has 4 divisors (see below), whose sum is σ = 9978139140. Its totient is φ = 9312929808.

The previous prime is 9645534421. The next prime is 9645534517. The reversal of 9645534473 is 3744355469.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7596342649 + 2049191824 = 87157^2 + 45268^2 .

It is a cyclic number.

It is not a de Polignac number, because 9645534473 - 2¹⁰ = 9645533449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9645534373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166302290 + ... + 166302347.

It is an arithmetic number, because the mean of its divisors is an integer number (2494534785).

Almost surely, 2^9645534473 is an apocalyptic number.

It is an amenable number.

9645534473 is a deficient number, since it is larger than the sum of its proper divisors (332604667).

9645534473 is a wasteful number, since it uses less digits than its factorization.

9645534473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332604666.

The product of its digits is 5443200, while the sum is 50.

The square root of 9645534473 is about 98211.6819579015. The cubic root of 9645534473 is about 2128.6720894265.

The spelling of 9645534473 in words is "nine billion, six hundred forty-five million, five hundred thirty-four thousand, four hundred seventy-three".