9641957773 has 4 divisors (see below), whose sum is σ = 11019380320. Its totient is φ = 8264535228.

The previous prime is 9641957771. The next prime is 9641957789. The reversal of 9641957773 is 3777591469.

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.

It is a cyclic number.

It is not a de Polignac number, because 9641957773 - 2¹ = 9641957771 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 (9641957771) 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, 688711263 + ... + 688711276.

It is an arithmetic number, because the mean of its divisors is an integer number (2754845080).

Almost surely, 2^9641957773 is an apocalyptic number.

It is an amenable number.

9641957773 is a deficient number, since it is larger than the sum of its proper divisors (1377422547).

9641957773 is a wasteful number, since it uses less digits than its factorization.

9641957773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377422546.

The product of its digits is 10001880, while the sum is 58.

The square root of 9641957773 is about 98193.4711322499. The cubic root of 9641957773 is about 2128.4089430363.

The spelling of 9641957773 in words is "nine billion, six hundred forty-one million, nine hundred fifty-seven thousand, seven hundred seventy-three".