12165963 has 4 divisors (see below), whose sum is σ = 16221288. Its totient is φ = 8110640.

The previous prime is 12165953. The next prime is 12165983. The reversal of 12165963 is 36956121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12165963 - 2⁶ = 12165899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12165913) 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 in 3 ways as a sum of consecutive naturals, for example, 2027658 + ... + 2027663.

It is an arithmetic number, because the mean of its divisors is an integer number (4055322).

Almost surely, 2^12165963 is an apocalyptic number.

12165963 is a deficient number, since it is larger than the sum of its proper divisors (4055325).

12165963 is an equidigital number, since it uses as much as digits as its factorization.

12165963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055324.

The product of its digits is 9720, while the sum is 33.

The square root of 12165963 is about 3487.9740538026. The cubic root of 12165963 is about 229.9934654728.

The spelling of 12165963 in words is "twelve million, one hundred sixty-five thousand, nine hundred sixty-three".