9785013169 has 2 divisors, whose sum is σ = 9785013170. Its totient is φ = 9785013168.

The previous prime is 9785013157. The next prime is 9785013253. The reversal of 9785013169 is 9613105879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8711795569 + 1073217600 = 93337^2 + 32760^2 .

It is a cyclic number.

It is not a de Polignac number, because 9785013169 - 2¹¹ = 9785011121 is a prime.

It is a super-2 number, since 2×9785013169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9785023169) 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, 4892506584 + 4892506585.

It is an arithmetic number, because the mean of its divisors is an integer number (4892506585).

Almost surely, 2^9785013169 is an apocalyptic number.

It is an amenable number.

9785013169 is a deficient number, since it is larger than the sum of its proper divisors (1).

9785013169 is an equidigital number, since it uses as much as digits as its factorization.

9785013169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 9785013169 is about 98919.2254771538. The cubic root of 9785013169 is about 2138.8835391708.

The spelling of 9785013169 in words is "nine billion, seven hundred eighty-five million, thirteen thousand, one hundred sixty-nine".