169312144 has 15 divisors (see below), whose sum is σ = 328143153. Its totient is φ = 84630048.

The previous prime is 169312133. The next prime is 169312151. The reversal of 169312144 is 441213961.

The square root of 169312144 is 13012.

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

It can be written as a sum of positive squares in only one way, i.e., 168480400 + 831744 = 12980^2 + 912^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 50422 + ... + 53674.

Almost surely, 2^169312144 is an apocalyptic number.

169312144 is the 13012-nd square number.

It is an amenable number.

169312144 is a deficient number, since it is larger than the sum of its proper divisors (158831009).

169312144 is an frugal number, since it uses more digits than its factorization.

169312144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514 (or 3255 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The cubic root of 169312144 is about 553.2176613421.

Multiplying 169312144 by its product of digits (5184), we get a square (877714154496 = 936864²).

The spelling of 169312144 in words is "one hundred sixty-nine million, three hundred twelve thousand, one hundred forty-four".