180138041 has 4 divisors (see below), whose sum is σ = 180924900. Its totient is φ = 179351184.

The previous prime is 180138037. The next prime is 180138059. The reversal of 180138041 is 140831081.

180138041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74459641 + 105678400 = 8629^2 + 10280^2 .

It is a cyclic number.

It is not a de Polignac number, because 180138041 - 2² = 180138037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 180138041.

It is not an unprimeable number, because it can be changed into a prime (180138011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393086 + ... + 393543.

It is an arithmetic number, because the mean of its divisors is an integer number (45231225).

Almost surely, 2^180138041 is an apocalyptic number.

It is an amenable number.

180138041 is a deficient number, since it is larger than the sum of its proper divisors (786859).

180138041 is an equidigital number, since it uses as much as digits as its factorization.

180138041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786858.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 180138041 is about 13421.5513633857. The cubic root of 180138041 is about 564.7659155083.

The spelling of 180138041 in words is "one hundred eighty million, one hundred thirty-eight thousand, forty-one".