9173138 has 8 divisors (see below), whose sum is σ = 14818188. Its totient is φ = 4233744.

The previous prime is 9173137. The next prime is 9173161. The reversal of 9173138 is 8313719.

9173138 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 2 ways, for example, as 8720209 + 452929 = 2953^2 + 673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9173137) 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, 176381 + ... + 176432.

Almost surely, 2^9173138 is an apocalyptic number.

9173138 is a deficient number, since it is larger than the sum of its proper divisors (5645050).

9173138 is a wasteful number, since it uses less digits than its factorization.

9173138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352828.

The product of its digits is 4536, while the sum is 32.

The square root of 9173138 is about 3028.7188710740. The cubic root of 9173138 is about 209.3337767806. Note that the first 3 decimals are identical.

The spelling of 9173138 in words is "nine million, one hundred seventy-three thousand, one hundred thirty-eight".