9437983813 has 4 divisors (see below), whose sum is σ = 9443226028. Its totient is φ = 9432741600.

The previous prime is 9437983733. The next prime is 9437983831. The reversal of 9437983813 is 3183897349.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5142754369 + 4295229444 = 71713^2 + 65538^2 .

It is a cyclic number.

It is not a de Polignac number, because 9437983813 - 2²¹ = 9435886661 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 (9437983843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2618406 + ... + 2622007.

It is an arithmetic number, because the mean of its divisors is an integer number (2360806507).

Almost surely, 2^9437983813 is an apocalyptic number.

It is an amenable number.

9437983813 is a deficient number, since it is larger than the sum of its proper divisors (5242215).

9437983813 is a wasteful number, since it uses less digits than its factorization.

9437983813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242214.

The product of its digits is 3919104, while the sum is 55.

The square root of 9437983813 is about 97149.2862197145. The cubic root of 9437983813 is about 2113.2931373208.

The spelling of 9437983813 in words is "nine billion, four hundred thirty-seven million, nine hundred eighty-three thousand, eight hundred thirteen".