180555164 has 24 divisors (see below), whose sum is σ = 335593440. Its totient is φ = 84704256.

The previous prime is 180555161. The next prime is 180555173. The reversal of 180555164 is 461555081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180555161) 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 7 ways as a sum of consecutive naturals, for example, 18977 + ... + 26855.

It is an arithmetic number, because the mean of its divisors is an integer number (13983060).

Almost surely, 2^180555164 is an apocalyptic number.

It is an amenable number.

180555164 is a deficient number, since it is larger than the sum of its proper divisors (155038276).

180555164 is a wasteful number, since it uses less digits than its factorization.

180555164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237 (or 8235 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 180555164 is about 13437.0816772095. The cubic root of 180555164 is about 565.2014986002.

The spelling of 180555164 in words is "one hundred eighty million, five hundred fifty-five thousand, one hundred sixty-four".