9379543661 has 4 divisors (see below), whose sum is σ = 9382909500. Its totient is φ = 9376177824.

The previous prime is 9379543651. The next prime is 9379543687. The reversal of 9379543661 is 1663459739.

9379543661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 6194634436 + 3184909225 = 78706^2 + 56435^2 .

It is a cyclic number.

It is not a de Polignac number, because 9379543661 - 2¹⁰ = 9379542637 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 (9379543601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1678736 + ... + 1684313.

It is an arithmetic number, because the mean of its divisors is an integer number (2345727375).

Almost surely, 2^9379543661 is an apocalyptic number.

It is an amenable number.

9379543661 is a deficient number, since it is larger than the sum of its proper divisors (3365839).

9379543661 is a wasteful number, since it uses less digits than its factorization.

9379543661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365838.

The product of its digits is 3674160, while the sum is 53.

The square root of 9379543661 is about 96848.0441774639. The cubic root of 9379543661 is about 2108.9222546465.

The spelling of 9379543661 in words is "nine billion, three hundred seventy-nine million, five hundred forty-three thousand, six hundred sixty-one".