180411481 has 4 divisors (see below), whose sum is σ = 180501412. Its totient is φ = 180321552.

The previous prime is 180411457. The next prime is 180411529. The reversal of 180411481 is 184114081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184114081 = 131 ⋅1405451.

It can be written as a sum of positive squares in 2 ways, for example, as 121352256 + 59059225 = 11016^2 + 7685^2 .

It is a cyclic number.

It is not a de Polignac number, because 180411481 - 2⁵ = 180411449 is a prime.

It is a super-2 number, since 2×180411481² = 65096604953226722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180411181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41886 + ... + 45991.

It is an arithmetic number, because the mean of its divisors is an integer number (45125353).

Almost surely, 2^180411481 is an apocalyptic number.

It is an amenable number.

180411481 is a deficient number, since it is larger than the sum of its proper divisors (89931).

180411481 is an equidigital number, since it uses as much as digits as its factorization.

180411481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89930.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 180411481 is about 13431.7341024903. The cubic root of 180411481 is about 565.0515326166.

The spelling of 180411481 in words is "one hundred eighty million, four hundred eleven thousand, four hundred eighty-one".