17749229249 has 2 divisors, whose sum is σ = 17749229250. Its totient is φ = 17749229248.

The previous prime is 17749229227. The next prime is 17749229279. The reversal of 17749229249 is 94292294771.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15121129024 + 2628100225 = 122968^2 + 51265^2 .

It is a cyclic number.

It is not a de Polignac number, because 17749229249 - 2¹⁶ = 17749163713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17749229194 and 17749229203.

It is not a weakly prime, because it can be changed into another prime (17749229279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8874614624 + 8874614625.

It is an arithmetic number, because the mean of its divisors is an integer number (8874614625).

Almost surely, 2^17749229249 is an apocalyptic number.

It is an amenable number.

17749229249 is a deficient number, since it is larger than the sum of its proper divisors (1).

17749229249 is an equidigital number, since it uses as much as digits as its factorization.

17749229249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The spelling of 17749229249 in words is "seventeen billion, seven hundred forty-nine million, two hundred twenty-nine thousand, two hundred forty-nine".