13180985 has 4 divisors (see below), whose sum is σ = 15817188. Its totient is φ = 10544784.

The previous prime is 13180961. The next prime is 13180997. The reversal of 13180985 is 58908131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58908131 = 1367 ⋅43093.

It can be written as a sum of positive squares in 2 ways, for example, as 2105401 + 11075584 = 1451^2 + 3328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13180985 is a prime.

It is a Duffinian number.

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, 1318094 + ... + 1318103.

It is an arithmetic number, because the mean of its divisors is an integer number (3954297).

Almost surely, 2^13180985 is an apocalyptic number.

It is an amenable number.

13180985 is a deficient number, since it is larger than the sum of its proper divisors (2636203).

13180985 is an equidigital number, since it uses as much as digits as its factorization.

13180985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636202.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 13180985 is about 3630.5626285743. The cubic root of 13180985 is about 236.2196138705.

The spelling of 13180985 in words is "thirteen million, one hundred eighty thousand, nine hundred eighty-five".