161116 has 12 divisors (see below), whose sum is σ = 288288. Its totient is φ = 78752.

The previous prime is 161093. The next prime is 161123. The reversal of 161116 is 611161.

It is a self number, because there is not a number n which added to its sum of digits gives 161116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (24024).

2¹⁶¹¹¹⁶ is an apocalyptic number.

It is an amenable number.

161116 is a deficient number, since it is larger than the sum of its proper divisors (127172).

161116 is a wasteful number, since it uses less digits than its factorization.

161116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 906 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 161116 is about 401.3925759154. The cubic root of 161116 is about 54.4142804205.

Adding to 161116 its reverse (611161), we get a palindrome (772277).

The spelling of 161116 in words is "one hundred sixty-one thousand, one hundred sixteen".