12681194 has 4 divisors (see below), whose sum is σ = 19021794. Its totient is φ = 6340596.

The previous prime is 12681187. The next prime is 12681203. The reversal of 12681194 is 49118621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49118621 = 59 ⋅832519.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 3286969 = 3065^2 + 1813^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12681194.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3170297 + ... + 3170300.

Almost surely, 2^12681194 is an apocalyptic number.

12681194 is a deficient number, since it is larger than the sum of its proper divisors (6340600).

12681194 is an equidigital number, since it uses as much as digits as its factorization.

12681194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340599.

The product of its digits is 3456, while the sum is 32.

The square root of 12681194 is about 3561.0664133094. The cubic root of 12681194 is about 233.1954373428.

The spelling of 12681194 in words is "twelve million, six hundred eighty-one thousand, one hundred ninety-four".