12158693 has 2 divisors, whose sum is σ = 12158694. Its totient is φ = 12158692.

The previous prime is 12158669. The next prime is 12158711. The reversal of 12158693 is 39685121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9746884 + 2411809 = 3122^2 + 1553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12158693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12157693) 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, 6079346 + 6079347.

It is an arithmetic number, because the mean of its divisors is an integer number (6079347).

Almost surely, 2^12158693 is an apocalyptic number.

It is an amenable number.

12158693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158693 is an equidigital number, since it uses as much as digits as its factorization.

12158693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 12158693 is about 3486.9317458190. The cubic root of 12158693 is about 229.9476440375.

The spelling of 12158693 in words is "twelve million, one hundred fifty-eight thousand, six hundred ninety-three".