180520116 has 72 divisors (see below), whose sum is σ = 491976576. Its totient is φ = 51367680.

The previous prime is 180520111. The next prime is 180520129. The reversal of 180520116 is 611025081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180520111) 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 23 ways as a sum of consecutive naturals, for example, 197701 + ... + 198611.

It is an arithmetic number, because the mean of its divisors is an integer number (6833008).

Almost surely, 2^180520116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180520116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245988288).

180520116 is an abundant number, since it is smaller than the sum of its proper divisors (311456460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180520116 is a wasteful number, since it uses less digits than its factorization.

180520116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 180520116 is about 13435.7774616879. Note that the first 3 decimals coincide. The cubic root of 180520116 is about 565.1649253566.

Adding to 180520116 its reverse (611025081), we get a palindrome (791545197).

The spelling of 180520116 in words is "one hundred eighty million, five hundred twenty thousand, one hundred sixteen".