180118 has 4 divisors (see below), whose sum is σ = 270180. Its totient is φ = 90058.

The previous prime is 180097. The next prime is 180137. The reversal of 180118 is 811081.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 180095 and 180104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45028 + ... + 45031.

It is an arithmetic number, because the mean of its divisors is an integer number (67545).

2¹⁸⁰¹¹⁸ is an apocalyptic number.

180118 is a deficient number, since it is larger than the sum of its proper divisors (90062).

180118 is an equidigital number, since it uses as much as digits as its factorization.

180118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90061.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 180118 is about 424.4031102619. The cubic root of 180118 is about 56.4744970657.

Adding to 180118 its reverse (811081), we get a palindrome (991199).

The spelling of 180118 in words is "one hundred eighty thousand, one hundred eighteen".