9730638737 has 4 divisors (see below), whose sum is σ = 9730848996. Its totient is φ = 9730428480.

The previous prime is 9730638719. The next prime is 9730638751. The reversal of 9730638737 is 7378360379.

It is a Cunningham number, because it is equal to 98644²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7378360379 = 13 ⋅567566183.

It can be written as a sum of positive squares in 2 ways, for example, as 6736469776 + 2994168961 = 82076^2 + 54719^2 .

It is a cyclic number.

It is not a de Polignac number, because 9730638737 - 2¹⁴ = 9730622353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9730638707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964 + ... + 139517.

It is an arithmetic number, because the mean of its divisors is an integer number (2432712249).

Almost surely, 2^9730638737 is an apocalyptic number.

It is an amenable number.

9730638737 is a deficient number, since it is larger than the sum of its proper divisors (210259).

9730638737 is a wasteful number, since it uses less digits than its factorization.

9730638737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210258.

The product of its (nonzero) digits is 4000752, while the sum is 53.

The square root of 9730638737 is about 98644.0000050687. Note that the first 5 decimals coincide. The cubic root of 9730638737 is about 2134.9143171577.

The spelling of 9730638737 in words is "nine billion, seven hundred thirty million, six hundred thirty-eight thousand, seven hundred thirty-seven".