9217732649 has 2 divisors, whose sum is σ = 9217732650. Its totient is φ = 9217732648.

The previous prime is 9217732529. The next prime is 9217732681. The reversal of 9217732649 is 9462377129.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9202948624 + 14784025 = 95932^2 + 3845^2 .

It is an emirp because it is prime and its reverse (9462377129) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9217732649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9217732597 and 9217732606.

It is not a weakly prime, because it can be changed into another prime (9217732049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4608866324 + 4608866325.

It is an arithmetic number, because the mean of its divisors is an integer number (4608866325).

Almost surely, 2^9217732649 is an apocalyptic number.

It is an amenable number.

9217732649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9217732649 is an equidigital number, since it uses as much as digits as its factorization.

9217732649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 9217732649 is about 96009.0237894335. The cubic root of 9217732649 is about 2096.7244967450.

The spelling of 9217732649 in words is "nine billion, two hundred seventeen million, seven hundred thirty-two thousand, six hundred forty-nine".