180362445481 has 9 divisors (see below), whose sum is σ = 180919228791. Its totient is φ = 179807374344.

The previous prime is 180362445479. The next prime is 180362445509. The reversal of 180362445481 is 184544263081.

The square root of 180362445481 is 424691.

It is a perfect power (a square), and thus also a powerful number.

180362445481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 24068729881 + 156293715600 = 155141^2 + 395340^2 .

It is not a de Polignac number, because 180362445481 - 2¹ = 180362445479 is a prime.

It is a super-2 number, since 2×180362445481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180362485481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 254389555 + ... + 254390263.

Almost surely, 2^180362445481 is an apocalyptic number.

180362445481 is the 424691-st square number.

180362445481 is the 212346-th centered octagonal number.

It is an amenable number.

180362445481 is a deficient number, since it is larger than the sum of its proper divisors (556783310).

180362445481 is an frugal number, since it uses more digits than its factorization.

180362445481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 180362445481 in words is "one hundred eighty billion, three hundred sixty-two million, four hundred forty-five thousand, four hundred eighty-one".