9918145 has 16 divisors (see below), whose sum is σ = 12494160. Its totient is φ = 7547904.

The previous prime is 9918143. The next prime is 9918163. The reversal of 9918145 is 5418199.

9918145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 876096 + 9042049 = 936^2 + 3007^2 .

It is a cyclic number.

It is not a de Polignac number, because 9918145 - 2¹ = 9918143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9918143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10117 + ... + 11053.

It is an arithmetic number, because the mean of its divisors is an integer number (780885).

Almost surely, 2^9918145 is an apocalyptic number.

It is an amenable number.

9918145 is a deficient number, since it is larger than the sum of its proper divisors (2576015).

9918145 is a wasteful number, since it uses less digits than its factorization.

9918145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044.

The product of its digits is 12960, while the sum is 37.

The square root of 9918145 is about 3149.3086542922. The cubic root of 9918145 is about 214.8540202495.

The spelling of 9918145 in words is "nine million, nine hundred eighteen thousand, one hundred forty-five".