985615000309 has 2 divisors, whose sum is σ = 985615000310. Its totient is φ = 985615000308.

The previous prime is 985615000261. The next prime is 985615000367. The reversal of 985615000309 is 903000516589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 741153975409 + 244461024900 = 860903^2 + 494430^2 .

It is an emirp because it is prime and its reverse (903000516589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985615000309 - 2¹⁷ = 985614869237 is a prime.

It is a super-2 number, since 2×985615000309² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985615000109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492807500154 + 492807500155.

It is an arithmetic number, because the mean of its divisors is an integer number (492807500155).

Almost surely, 2^985615000309 is an apocalyptic number.

It is an amenable number.

985615000309 is a deficient number, since it is larger than the sum of its proper divisors (1).

985615000309 is an equidigital number, since it uses as much as digits as its factorization.

985615000309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 985615000309 in words is "nine hundred eighty-five billion, six hundred fifteen million, three hundred nine", and thus it is an aban number.