161018 has 16 divisors (see below), whose sum is σ = 284256. Its totient is φ = 67440.

The previous prime is 161017. The next prime is 161033. The reversal of 161018 is 810161.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 160987 and 161005.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161018.

It is not an unprimeable number, because it can be changed into a prime (161017) 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 7 ways as a sum of consecutive naturals, for example, 5 + ... + 567.

It is an arithmetic number, because the mean of its divisors is an integer number (17766).

2¹⁶¹⁰¹⁸ is an apocalyptic number.

161018 is a deficient number, since it is larger than the sum of its proper divisors (123238).

161018 is a wasteful number, since it uses less digits than its factorization.

161018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 161018 is about 401.2704823433. The cubic root of 161018 is about 54.4032455532.

Adding to 161018 its reverse (810161), we get a palindrome (971179).

The spelling of 161018 in words is "one hundred sixty-one thousand, eighteen".