438282161 has 4 divisors (see below), whose sum is σ = 440577024. Its totient is φ = 435987300.

The previous prime is 438282157. The next prime is 438282203. The reversal of 438282161 is 161282834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161282834 = 2 ⋅80641417.

It is a cyclic number.

It is not a de Polignac number, because 438282161 - 2² = 438282157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (438281161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147145 + ... + 1147526.

It is an arithmetic number, because the mean of its divisors is an integer number (110144256).

Almost surely, 2^438282161 is an apocalyptic number.

It is an amenable number.

438282161 is a deficient number, since it is larger than the sum of its proper divisors (2294863).

438282161 is a wasteful number, since it uses less digits than its factorization.

438282161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294862.

The product of its digits is 18432, while the sum is 35.

The square root of 438282161 is about 20935.1895381914. The cubic root of 438282161 is about 759.5993739159.

The spelling of 438282161 in words is "four hundred thirty-eight million, two hundred eighty-two thousand, one hundred sixty-one".