161123884 has 24 divisors (see below), whose sum is σ = 294013440. Its totient is φ = 77164416.

The previous prime is 161123839. The next prime is 161123903. The reversal of 161123884 is 488321161.

161123884 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 9264 + ... + 20200.

It is an arithmetic number, because the mean of its divisors is an integer number (12250560).

Almost surely, 2^161123884 is an apocalyptic number.

It is an amenable number.

161123884 is a deficient number, since it is larger than the sum of its proper divisors (132889556).

161123884 is a wasteful number, since it uses less digits than its factorization.

161123884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097 (or 11095 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 161123884 is about 12693.4583152110. The cubic root of 161123884 is about 544.1516796982.

The spelling of 161123884 in words is "one hundred sixty-one million, one hundred twenty-three thousand, eight hundred eighty-four".