9661829941 has 2 divisors, whose sum is σ = 9661829942. Its totient is φ = 9661829940.

The previous prime is 9661829899. The next prime is 9661829971. The reversal of 9661829941 is 1499281669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9590089041 + 71740900 = 97929^2 + 8470^2 .

It is a cyclic number.

It is not a de Polignac number, because 9661829941 - 2¹⁷ = 9661698869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9661829971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830914970 + 4830914971.

It is an arithmetic number, because the mean of its divisors is an integer number (4830914971).

Almost surely, 2^9661829941 is an apocalyptic number.

It is an amenable number.

9661829941 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661829941 is an equidigital number, since it uses as much as digits as its factorization.

9661829941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 55.

The square root of 9661829941 is about 98294.6078938209. The cubic root of 9661829941 is about 2129.8701634216.

The spelling of 9661829941 in words is "nine billion, six hundred sixty-one million, eight hundred twenty-nine thousand, nine hundred forty-one".