9163145 has 4 divisors (see below), whose sum is σ = 10995780. Its totient is φ = 7330512.

The previous prime is 9163139. The next prime is 9163169. The reversal of 9163145 is 5413619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5413619 = 1213 ⋅4463.

It can be written as a sum of positive squares in 2 ways, for example, as 2262016 + 6901129 = 1504^2 + 2627^2 .

It is a cyclic number.

It is not a de Polignac number, because 9163145 - 2⁶ = 9163081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916310 + ... + 916319.

It is an arithmetic number, because the mean of its divisors is an integer number (2748945).

Almost surely, 2^9163145 is an apocalyptic number.

It is an amenable number.

9163145 is a deficient number, since it is larger than the sum of its proper divisors (1832635).

9163145 is a wasteful number, since it uses less digits than its factorization.

9163145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832634.

The product of its digits is 3240, while the sum is 29.

The square root of 9163145 is about 3027.0687141193. The cubic root of 9163145 is about 209.2577347361.

It can be divided in two parts, 91 and 63145, that added together give a palindrome (63236).

The spelling of 9163145 in words is "nine million, one hundred sixty-three thousand, one hundred forty-five".