161030444 has 12 divisors (see below), whose sum is σ = 281901144. Its totient is φ = 80487264.

The previous prime is 161030357. The next prime is 161030447. The reversal of 161030444 is 444030161.

It is not an unprimeable number, because it can be changed into a prime (161030447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11267 + ... + 21189.

It is an arithmetic number, because the mean of its divisors is an integer number (23491762).

Almost surely, 2^161030444 is an apocalyptic number.

It is an amenable number.

161030444 is a deficient number, since it is larger than the sum of its proper divisors (120870700).

161030444 is a wasteful number, since it uses less digits than its factorization.

161030444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13984 (or 13982 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 161030444 is about 12689.7771454033. Note that the first 3 decimals coincide. The cubic root of 161030444 is about 544.0464700427.

The spelling of 161030444 in words is "one hundred sixty-one million, thirty thousand, four hundred forty-four".