12180853 has 4 divisors (see below), whose sum is σ = 12347788. Its totient is φ = 12013920.

The previous prime is 12180851. The next prime is 12180871. The reversal of 12180853 is 35808121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35808121 = 43 ⋅832747.

It can be written as a sum of positive squares in 2 ways, for example, as 9690769 + 2490084 = 3113^2 + 1578^2 .

It is a cyclic number.

It is not a de Polignac number, because 12180853 - 2¹ = 12180851 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 (12180851) 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, 83358 + ... + 83503.

It is an arithmetic number, because the mean of its divisors is an integer number (3086947).

Almost surely, 2^12180853 is an apocalyptic number.

It is an amenable number.

12180853 is a deficient number, since it is larger than the sum of its proper divisors (166935).

12180853 is an equidigital number, since it uses as much as digits as its factorization.

12180853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166934.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 12180853 is about 3490.1078779889. The cubic root of 12180853 is about 230.0872573773.

Adding to 12180853 its reverse (35808121), we get a palindrome (47988974).

The spelling of 12180853 in words is "twelve million, one hundred eighty thousand, eight hundred fifty-three".