12980186 has 4 divisors (see below), whose sum is σ = 19470282. Its totient is φ = 6490092.

The previous prime is 12980183. The next prime is 12980189. The reversal of 12980186 is 68108921.

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

It is an interprime number because it is at equal distance from previous prime (12980183) and next prime (12980189).

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 4541161 = 2905^2 + 2131^2 .

It is not an unprimeable number, because it can be changed into a prime (12980183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245045 + ... + 3245048.

Almost surely, 2^12980186 is an apocalyptic number.

12980186 is a deficient number, since it is larger than the sum of its proper divisors (6490096).

12980186 is an equidigital number, since it uses as much as digits as its factorization.

12980186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490095.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 12980186 is about 3602.8025202611. The cubic root of 12980186 is about 235.0139481686.

The spelling of 12980186 in words is "twelve million, nine hundred eighty thousand, one hundred eighty-six".