12194851 has 2 divisors, whose sum is σ = 12194852. Its totient is φ = 12194850.

The previous prime is 12194849. The next prime is 12194857. The reversal of 12194851 is 15849121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12194851 - 2¹ = 12194849 is a prime.

Together with 12194849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12194857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6097425 + 6097426.

It is an arithmetic number, because the mean of its divisors is an integer number (6097426).

Almost surely, 2^12194851 is an apocalyptic number.

12194851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12194851 is an equidigital number, since it uses as much as digits as its factorization.

12194851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 31.

The square root of 12194851 is about 3492.1126843216. The cubic root of 12194851 is about 230.1753609081.

The spelling of 12194851 in words is "twelve million, one hundred ninety-four thousand, eight hundred fifty-one".