9628636973 has 4 divisors (see below), whose sum is σ = 10135407360. Its totient is φ = 9121866588.

The previous prime is 9628636967. The next prime is 9628636991. The reversal of 9628636973 is 3796368269.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3796368269 = 271 ⋅14008739.

It is a cyclic number.

It is not a de Polignac number, because 9628636973 - 2⁴ = 9628636957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9628686973) 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, 253385165 + ... + 253385202.

It is an arithmetic number, because the mean of its divisors is an integer number (2533851840).

Almost surely, 2^9628636973 is an apocalyptic number.

It is an amenable number.

9628636973 is a deficient number, since it is larger than the sum of its proper divisors (506770387).

9628636973 is a wasteful number, since it uses less digits than its factorization.

9628636973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506770386.

The product of its digits is 17635968, while the sum is 59.

The square root of 9628636973 is about 98125.6183318098. The cubic root of 9628636973 is about 2127.4283269581.

The spelling of 9628636973 in words is "nine billion, six hundred twenty-eight million, six hundred thirty-six thousand, nine hundred seventy-three".