9138285 has 64 divisors (see below), whose sum is σ = 18063360. Its totient is φ = 4354560.

The previous prime is 9138281. The next prime is 9138289. The reversal of 9138285 is 5828319.

9138285 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9138281) and next prime (9138289).

It is not a de Polignac number, because 9138285 - 2² = 9138281 is a prime.

9138285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71892 + ... + 72018.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^9138285 is an apocalyptic number.

It is an amenable number.

9138285 is a deficient number, since it is larger than the sum of its proper divisors (8925075).

9138285 is a wasteful number, since it uses less digits than its factorization.

9138285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 9138285 is about 3022.9596424696. The cubic root of 9138285 is about 209.0683216421.

The spelling of 9138285 in words is "nine million, one hundred thirty-eight thousand, two hundred eighty-five".