12163813 has 2 divisors, whose sum is σ = 12163814. Its totient is φ = 12163812.

The previous prime is 12163807. The next prime is 12163829. The reversal of 12163813 is 31836121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9229444 + 2934369 = 3038^2 + 1713^2 .

It is a cyclic number.

It is not a de Polignac number, because 12163813 - 2⁹ = 12163301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12163843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6081906 + 6081907.

It is an arithmetic number, because the mean of its divisors is an integer number (6081907).

Almost surely, 2^12163813 is an apocalyptic number.

It is an amenable number.

12163813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12163813 is an equidigital number, since it uses as much as digits as its factorization.

12163813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 12163813 is about 3487.6658383509. The cubic root of 12163813 is about 229.9799163308.

Adding to 12163813 its reverse (31836121), we get a palindrome (43999934).

The spelling of 12163813 in words is "twelve million, one hundred sixty-three thousand, eight hundred thirteen".