8745409261 has 2 divisors, whose sum is σ = 8745409262. Its totient is φ = 8745409260.

The previous prime is 8745409241. The next prime is 8745409289. The reversal of 8745409261 is 1629045478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4489804036 + 4255605225 = 67006^2 + 65235^2 .

It is a cyclic number.

It is not a de Polignac number, because 8745409261 - 2¹¹ = 8745407213 is a prime.

It is a super-2 number, since 2×8745409261² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8745409201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4372704630 + 4372704631.

It is an arithmetic number, because the mean of its divisors is an integer number (4372704631).

Almost surely, 2^8745409261 is an apocalyptic number.

It is an amenable number.

8745409261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8745409261 is an equidigital number, since it uses as much as digits as its factorization.

8745409261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 8745409261 is about 93516.8929178039. The cubic root of 8745409261 is about 2060.2822107632.

The spelling of 8745409261 in words is "eight billion, seven hundred forty-five million, four hundred nine thousand, two hundred sixty-one".