161411144 has 16 divisors (see below), whose sum is σ = 303055020. Its totient is φ = 80596480.

The previous prime is 161411119. The next prime is 161411153. The reversal of 161411144 is 441114161.

It can be written as a sum of positive squares in 2 ways, for example, as 117983044 + 43428100 = 10862^2 + 6590^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7169 + ... + 19344.

Almost surely, 2^161411144 is an apocalyptic number.

It is an amenable number.

161411144 is a deficient number, since it is larger than the sum of its proper divisors (141643876).

161411144 is a wasteful number, since it uses less digits than its factorization.

161411144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27280 (or 27276 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 161411144 is about 12704.7685535786. The cubic root of 161411144 is about 544.4748683016.

The spelling of 161411144 in words is "one hundred sixty-one million, four hundred eleven thousand, one hundred forty-four".