9918315 has 32 divisors (see below), whose sum is σ = 19238400. Its totient is φ = 4808160.

The previous prime is 9918289. The next prime is 9918317. The reversal of 9918315 is 5138199.

It is a happy number.

It is not a de Polignac number, because 9918315 - 2⁸ = 9918059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9918315.

It is not an unprimeable number, because it can be changed into a prime (9918317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1855 + ... + 4824.

It is an arithmetic number, because the mean of its divisors is an integer number (601200).

Almost surely, 2^9918315 is an apocalyptic number.

9918315 is a deficient number, since it is larger than the sum of its proper divisors (9320085).

9918315 is a wasteful number, since it uses less digits than its factorization.

9918315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6704 (or 6698 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 9918315 is about 3149.3356442272. The cubic root of 9918315 is about 214.8552477968.

The spelling of 9918315 in words is "nine million, nine hundred eighteen thousand, three hundred fifteen".