180530873 has 2 divisors, whose sum is σ = 180530874. Its totient is φ = 180530872.

The previous prime is 180530809. The next prime is 180530921. The reversal of 180530873 is 378035081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170746489 + 9784384 = 13067^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 180530873 - 2⁶ = 180530809 is a prime.

It is a super-2 number, since 2×180530873² = 65182792212284258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180530573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90265436 + 90265437.

It is an arithmetic number, because the mean of its divisors is an integer number (90265437).

Almost surely, 2^180530873 is an apocalyptic number.

It is an amenable number.

180530873 is a deficient number, since it is larger than the sum of its proper divisors (1).

180530873 is an equidigital number, since it uses as much as digits as its factorization.

180530873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 180530873 is about 13436.1777675052. The cubic root of 180530873 is about 565.1761509908.

The spelling of 180530873 in words is "one hundred eighty million, five hundred thirty thousand, eight hundred seventy-three".