161504946 has 24 divisors (see below), whose sum is σ = 351331344. Its totient is φ = 53619000.

The previous prime is 161504929. The next prime is 161504971. The reversal of 161504946 is 649405161.

161504946 is a `hidden beast` number, since 1 + 61 + 504 + 94 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161504946.

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 11 ways as a sum of consecutive naturals, for example, 13356 + ... + 22391.

It is an arithmetic number, because the mean of its divisors is an integer number (14638806).

Almost surely, 2^161504946 is an apocalyptic number.

161504946 is an abundant number, since it is smaller than the sum of its proper divisors (189826398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161504946 is a wasteful number, since it uses less digits than its factorization.

161504946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36006 (or 36003 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 161504946 is about 12708.4596234162. The cubic root of 161504946 is about 544.5803193877.

The spelling of 161504946 in words is "one hundred sixty-one million, five hundred four thousand, nine hundred forty-six".