267944161 has 3 divisors (see below), whose sum is σ = 267960531. Its totient is φ = 267927792.

The previous prime is 267944113. The next prime is 267944179. The reversal of 267944161 is 161449762.

The square root of 267944161 is 16369.

It is a perfect power (a square), and thus also a powerful number.

267944161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 161449762 = 2 ⋅80724881.

It can be written as a sum of positive squares in only one way, i.e., 84070561 + 183873600 = 9169^2 + 13560^2 .

It is not a de Polignac number, because 267944161 - 2¹⁷ = 267813089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (267944111) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8185 + ... + 24553.

It is an arithmetic number, because the mean of its divisors is an integer number (89320177).

Almost surely, 2^267944161 is an apocalyptic number.

267944161 is the 16369-th square number.

267944161 is the 8185-th centered octagonal number.

It is an amenable number.

267944161 is a deficient number, since it is larger than the sum of its proper divisors (16370).

267944161 is an frugal number, since it uses more digits than its factorization.

267944161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32738 (or 16369 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The cubic root of 267944161 is about 644.6857921159.

The spelling of 267944161 in words is "two hundred sixty-seven million, nine hundred forty-four thousand, one hundred sixty-one".