9641813 has 8 divisors (see below), whose sum is σ = 9919800. Its totient is φ = 9367488.

The previous prime is 9641789. The next prime is 9641831. The reversal of 9641813 is 3181469.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3301489 + 6340324 = 1817^2 + 2518^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9641813 - 2¹⁶ = 9576277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9641813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9641893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4943 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (1239975).

Almost surely, 2^9641813 is an apocalyptic number.

It is an amenable number.

9641813 is a deficient number, since it is larger than the sum of its proper divisors (277987).

9641813 is a wasteful number, since it uses less digits than its factorization.

9641813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831.

The product of its digits is 5184, while the sum is 32.

The square root of 9641813 is about 3105.1268895168. The cubic root of 9641813 is about 212.8398290369.

The spelling of 9641813 in words is "nine million, six hundred forty-one thousand, eight hundred thirteen".