180980556 has 24 divisors (see below), whose sum is σ = 424187904. Its totient is φ = 60055440.

The previous prime is 180980543. The next prime is 180980627. The reversal of 180980556 is 655089081.

It is an unprimeable number.

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, 31140 + ... + 36491.

It is an arithmetic number, because the mean of its divisors is an integer number (17674496).

Almost surely, 2^180980556 is an apocalyptic number.

It is an amenable number.

180980556 is an abundant number, since it is smaller than the sum of its proper divisors (243207348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180980556 is a wasteful number, since it uses less digits than its factorization.

180980556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67861 (or 67859 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 180980556 is about 13452.9013970965. The cubic root of 180980556 is about 565.6450262478.

The spelling of 180980556 in words is "one hundred eighty million, nine hundred eighty thousand, five hundred fifty-six".