9872387361 has 6 divisors (see below), whose sum is σ = 14260115090. Its totient is φ = 6581591568.

The previous prime is 9872387353. The next prime is 9872387411. The reversal of 9872387361 is 1637832789.

It can be written as a sum of positive squares in only one way, i.e., 5920379136 + 3952008225 = 76944^2 + 62865^2 .

It is not a de Polignac number, because 9872387361 - 2³ = 9872387353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9872387298 and 9872387307.

It is not an unprimeable number, because it can be changed into a prime (9872387351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 548465956 + ... + 548465973.

Almost surely, 2^9872387361 is an apocalyptic number.

It is an amenable number.

9872387361 is a deficient number, since it is larger than the sum of its proper divisors (4387727729).

9872387361 is a wasteful number, since it uses less digits than its factorization.

9872387361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096931935 (or 1096931932 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 9872387361 is about 99359.8880887051. Note that the first 3 decimals coincide. The cubic root of 9872387361 is about 2145.2309914736.

The spelling of 9872387361 in words is "nine billion, eight hundred seventy-two million, three hundred eighty-seven thousand, three hundred sixty-one".