180056389 has 8 divisors (see below), whose sum is σ = 190229760. Its totient is φ = 170147376.

The previous prime is 180056353. The next prime is 180056399. The reversal of 180056389 is 983650081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180056389 - 2¹¹ = 180054341 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 (180056329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64689 + ... + 67414.

It is an arithmetic number, because the mean of its divisors is an integer number (23778720).

Almost surely, 2^180056389 is an apocalyptic number.

It is an amenable number.

180056389 is a deficient number, since it is larger than the sum of its proper divisors (10173371).

180056389 is a wasteful number, since it uses less digits than its factorization.

180056389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132179.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 180056389 is about 13418.5091943926. The cubic root of 180056389 is about 564.6805712624.

The spelling of 180056389 in words is "one hundred eighty million, fifty-six thousand, three hundred eighty-nine".