162744161 has 4 divisors (see below), whose sum is σ = 163045524. Its totient is φ = 162442800.

The previous prime is 162744151. The next prime is 162744173. The reversal of 162744161 is 161447261.

162744161 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 an emirpimes, since its reverse is a distinct semiprime: 161447261 = 3109 ⋅51929.

It can be written as a sum of positive squares in 2 ways, for example, as 71656225 + 91087936 = 8465^2 + 9544^2 .

It is a cyclic number.

It is not a de Polignac number, because 162744161 - 2¹⁴ = 162727777 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 (162744151) 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, 149870 + ... + 150951.

It is an arithmetic number, because the mean of its divisors is an integer number (40761381).

Almost surely, 2^162744161 is an apocalyptic number.

It is an amenable number.

162744161 is a deficient number, since it is larger than the sum of its proper divisors (301363).

162744161 is an equidigital number, since it uses as much as digits as its factorization.

162744161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301362.

The product of its digits is 8064, while the sum is 32.

The square root of 162744161 is about 12757.1219716674. The cubic root of 162744161 is about 545.9696130450.

The spelling of 162744161 in words is "one hundred sixty-two million, seven hundred forty-four thousand, one hundred sixty-one".