9641509001 has 2 divisors, whose sum is σ = 9641509002. Its totient is φ = 9641509000.

The previous prime is 9641508991. The next prime is 9641509019. The reversal of 9641509001 is 1009051469.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8733089401 + 908419600 = 93451^2 + 30140^2 .

It is a cyclic number.

It is not a de Polignac number, because 9641509001 - 2³⁰ = 8567767177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9641509021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820754500 + 4820754501.

It is an arithmetic number, because the mean of its divisors is an integer number (4820754501).

Almost surely, 2^9641509001 is an apocalyptic number.

It is an amenable number.

9641509001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9641509001 is an equidigital number, since it uses as much as digits as its factorization.

9641509001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 9641509001 is about 98191.1859639143. The cubic root of 9641509001 is about 2128.3759212102.

The spelling of 9641509001 in words is "nine billion, six hundred forty-one million, five hundred nine thousand, one".