180660481 has 3 divisors (see below), whose sum is σ = 180673923. Its totient is φ = 180647040.

The previous prime is 180660449. The next prime is 180660499. The reversal of 180660481 is 184066081.

The square root of 180660481 is 13441.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 184066081 = 251 ⋅733331.

It can be written as a sum of positive squares in only one way, i.e., 24910081 + 155750400 = 4991^2 + 12480^2 .

It is not a de Polignac number, because 180660481 - 2⁵ = 180660449 is a prime.

It is a super-2 number, since 2×180660481² = 65276418790302722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180600481) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6721 + ... + 20161.

It is an arithmetic number, because the mean of its divisors is an integer number (60224641).

Almost surely, 2^180660481 is an apocalyptic number.

180660481 is the 13441-st square number.

180660481 is the 6721-st centered octagonal number.

It is an amenable number.

180660481 is a deficient number, since it is larger than the sum of its proper divisors (13442).

180660481 is an frugal number, since it uses more digits than its factorization.

180660481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26882 (or 13441 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The cubic root of 180660481 is about 565.3113703887.

Multiplying 180660481 by its product of nonzero digits (9216), we get a square (1664966992896 = 1290336²).

The spelling of 180660481 in words is "one hundred eighty million, six hundred sixty thousand, four hundred eighty-one".