180487109 has 6 divisors (see below), whose sum is σ = 198386790. Its totient is φ = 164079080.

The previous prime is 180487093. The next prime is 180487117. The reversal of 180487109 is 901784081.

It can be written as a sum of positive squares in only one way, i.e., 93064609 + 87422500 = 9647^2 + 9350^2 .

It is not a de Polignac number, because 180487109 - 2⁴ = 180487093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180487189) 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 5 ways as a sum of consecutive naturals, for example, 745694 + ... + 745935.

It is an arithmetic number, because the mean of its divisors is an integer number (33064465).

Almost surely, 2^180487109 is an apocalyptic number.

It is an amenable number.

180487109 is a deficient number, since it is larger than the sum of its proper divisors (17899681).

180487109 is a wasteful number, since it uses less digits than its factorization.

180487109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491651 (or 1491640 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 180487109 is about 13434.5490806353. The cubic root of 180487109 is about 565.1304776061.

The spelling of 180487109 in words is "one hundred eighty million, four hundred eighty-seven thousand, one hundred nine".