180814085 has 4 divisors (see below), whose sum is σ = 216976908. Its totient is φ = 144651264.

The previous prime is 180814069. The next prime is 180814087. The reversal of 180814085 is 580418081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580418081 = 103 ⋅5635127.

It can be written as a sum of positive squares in 2 ways, for example, as 127260961 + 53553124 = 11281^2 + 7318^2 .

It is a cyclic number.

It is not a de Polignac number, because 180814085 - 2⁴ = 180814069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180814087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18081404 + ... + 18081413.

It is an arithmetic number, because the mean of its divisors is an integer number (54244227).

Almost surely, 2^180814085 is an apocalyptic number.

It is an amenable number.

180814085 is a deficient number, since it is larger than the sum of its proper divisors (36162823).

180814085 is an equidigital number, since it uses as much as digits as its factorization.

180814085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36162822.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 180814085 is about 13446.7127953266. The cubic root of 180814085 is about 565.4715409825.

The spelling of 180814085 in words is "one hundred eighty million, eight hundred fourteen thousand, eighty-five".