9641537449 has 2 divisors, whose sum is σ = 9641537450. Its totient is φ = 9641537448.

The previous prime is 9641537413. The next prime is 9641537473. The reversal of 9641537449 is 9447351469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4846944400 + 4794593049 = 69620^2 + 69243^2 .

It is a cyclic number.

It is not a de Polignac number, because 9641537449 - 2¹³ = 9641529257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9641537396 and 9641537405.

It is not a weakly prime, because it can be changed into another prime (9641537749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820768724 + 4820768725.

It is an arithmetic number, because the mean of its divisors is an integer number (4820768725).

Almost surely, 2^9641537449 is an apocalyptic number.

It is an amenable number.

9641537449 is a deficient number, since it is larger than the sum of its proper divisors (1).

9641537449 is an equidigital number, since it uses as much as digits as its factorization.

9641537449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The square root of 9641537449 is about 98191.3308240600. The cubic root of 9641537449 is about 2128.3780145194.

The spelling of 9641537449 in words is "nine billion, six hundred forty-one million, five hundred thirty-seven thousand, four hundred forty-nine".