180258145 has 4 divisors (see below), whose sum is σ = 216309780. Its totient is φ = 144206512.

The previous prime is 180258139. The next prime is 180258163. The reversal of 180258145 is 541852081.

180258145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541852081 = 61 ⋅8882821.

It can be written as a sum of positive squares in 2 ways, for example, as 137381841 + 42876304 = 11721^2 + 6548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180258145 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180258145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18025810 + ... + 18025819.

It is an arithmetic number, because the mean of its divisors is an integer number (54077445).

Almost surely, 2^180258145 is an apocalyptic number.

It is an amenable number.

180258145 is a deficient number, since it is larger than the sum of its proper divisors (36051635).

180258145 is an equidigital number, since it uses as much as digits as its factorization.

180258145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36051634.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 180258145 is about 13426.0249143222. The cubic root of 180258145 is about 564.8914036723.

The spelling of 180258145 in words is "one hundred eighty million, two hundred fifty-eight thousand, one hundred forty-five".