9918716372 has 12 divisors (see below), whose sum is σ = 17359958196. Its totient is φ = 4958728320.

The previous prime is 9918716341. The next prime is 9918716377. The reversal of 9918716372 is 2736178199.

It can be written as a sum of positive squares in 2 ways, for example, as 2995810756 + 6922905616 = 54734^2 + 83204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918716377) 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, 121103 + ... + 185750.

It is an arithmetic number, because the mean of its divisors is an integer number (1446663183).

Almost surely, 2^9918716372 is an apocalyptic number.

It is an amenable number.

9918716372 is a deficient number, since it is larger than the sum of its proper divisors (7441241824).

9918716372 is a wasteful number, since it uses less digits than its factorization.

9918716372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314938 (or 314936 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 53.

The square root of 9918716372 is about 99592.7526078078. The cubic root of 9918716372 is about 2148.5814599462.

The spelling of 9918716372 in words is "nine billion, nine hundred eighteen million, seven hundred sixteen thousand, three hundred seventy-two".