180460918285 has 4 divisors (see below), whose sum is σ = 216553101948. Its totient is φ = 144368734624.

The previous prime is 180460918283. The next prime is 180460918291. The reversal of 180460918285 is 582819064081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144061238916 + 36399679369 = 379554^2 + 190787^2 .

It is a cyclic number.

It is not a de Polignac number, because 180460918285 - 2¹ = 180460918283 is a prime.

It is a super-2 number, since 2×180460918285² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180460918283) 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, 18046091824 + ... + 18046091833.

It is an arithmetic number, because the mean of its divisors is an integer number (54138275487).

Almost surely, 2^180460918285 is an apocalyptic number.

It is an amenable number.

180460918285 is a deficient number, since it is larger than the sum of its proper divisors (36092183663).

180460918285 is an equidigital number, since it uses as much as digits as its factorization.

180460918285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36092183662.

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 180460918285 in words is "one hundred eighty billion, four hundred sixty million, nine hundred eighteen thousand, two hundred eighty-five".