9438161 has 4 divisors (see below), whose sum is σ = 9465252. Its totient is φ = 9411072.

The previous prime is 9438151. The next prime is 9438173. The reversal of 9438161 is 1618349.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5107600 + 4330561 = 2260^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 9438161 - 2¹⁸ = 9176017 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9438151) 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, 13016 + ... + 13721.

It is an arithmetic number, because the mean of its divisors is an integer number (2366313).

Almost surely, 2^9438161 is an apocalyptic number.

It is an amenable number.

9438161 is a deficient number, since it is larger than the sum of its proper divisors (27091).

9438161 is a wasteful number, since it uses less digits than its factorization.

9438161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27090.

The product of its digits is 5184, while the sum is 32.

The square root of 9438161 is about 3072.1590128117. The cubic root of 9438161 is about 211.3306362099.

The spelling of 9438161 in words is "nine million, four hundred thirty-eight thousand, one hundred sixty-one".