144973161 has 24 divisors (see below), whose sum is σ = 223783560. Its totient is φ = 90118656.

The previous prime is 144973159. The next prime is 144973181. The reversal of 144973161 is 161379441.

144973161 is a `hidden beast` number, since 1 + 4 + 497 + 3 + 161 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18275625 + 126697536 = 4275^2 + 11256^2 .

It is not a de Polignac number, because 144973161 - 2¹ = 144973159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144973111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12331 + ... + 21023.

It is an arithmetic number, because the mean of its divisors is an integer number (9324315).

Almost surely, 2^144973161 is an apocalyptic number.

It is an amenable number.

144973161 is a deficient number, since it is larger than the sum of its proper divisors (78810399).

144973161 is a wasteful number, since it uses less digits than its factorization.

144973161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825 (or 8822 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 144973161 is about 12040.4800984014. The cubic root of 144973161 is about 525.3263712159.

The spelling of 144973161 in words is "one hundred forty-four million, nine hundred seventy-three thousand, one hundred sixty-one".