161188 has 12 divisors (see below), whose sum is σ = 287280. Its totient is φ = 79112.

The previous prime is 161167. The next prime is 161201. The reversal of 161188 is 881161.

It is a happy number.

161188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

161188 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2¹⁶¹¹⁸⁸ is an apocalyptic number.

It is an amenable number.

161188 is a deficient number, since it is larger than the sum of its proper divisors (126092).

161188 is a wasteful number, since it uses less digits than its factorization.

161188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 161188 is about 401.4822536551. The cubic root of 161188 is about 54.4223848188.

The spelling of 161188 in words is "one hundred sixty-one thousand, one hundred eighty-eight".