180855113 has 4 divisors (see below), whose sum is σ = 180888708. Its totient is φ = 180821520.

The previous prime is 180855083. The next prime is 180855127. The reversal of 180855113 is 311558081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311558081 = 6203 ⋅50227.

It can be written as a sum of positive squares in 2 ways, for example, as 98644624 + 82210489 = 9932^2 + 9067^2 .

It is a cyclic number.

It is not a de Polignac number, because 180855113 - 2¹⁸ = 180592969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 180855113.

It is not an unprimeable number, because it can be changed into a prime (180855173) 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 3 ways as a sum of consecutive naturals, for example, 6698 + ... + 20163.

It is an arithmetic number, because the mean of its divisors is an integer number (45222177).

Almost surely, 2^180855113 is an apocalyptic number.

It is an amenable number.

180855113 is a deficient number, since it is larger than the sum of its proper divisors (33595).

180855113 is an equidigital number, since it uses as much as digits as its factorization.

180855113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33594.

The product of its (nonzero) digits is 4800, while the sum is 32.

The square root of 180855113 is about 13448.2382861102. The cubic root of 180855113 is about 565.5143075841.

The spelling of 180855113 in words is "one hundred eighty million, eight hundred fifty-five thousand, one hundred thirteen".