9985436237 has 16 divisors (see below), whose sum is σ = 11808864000. Its totient is φ = 8438376240.

The previous prime is 9985436231. The next prime is 9985436239. The reversal of 9985436237 is 7326345899.

9985436237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9985436237 - 2²⁰ = 9984387661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985436231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180662 + ... + 229367.

It is an arithmetic number, because the mean of its divisors is an integer number (738054000).

Almost surely, 2^9985436237 is an apocalyptic number.

It is an amenable number.

9985436237 is a deficient number, since it is larger than the sum of its proper divisors (1823427763).

9985436237 is an equidigital number, since it uses as much as digits as its factorization.

9985436237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410121 (or 410107 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 56.

The square root of 9985436237 is about 99927.1546527769. The cubic root of 9985436237 is about 2153.3882926771.

The spelling of 9985436237 in words is "nine billion, nine hundred eighty-five million, four hundred thirty-six thousand, two hundred thirty-seven".