12158149 has 2 divisors, whose sum is σ = 12158150. Its totient is φ = 12158148.

The previous prime is 12158143. The next prime is 12158161. The reversal of 12158149 is 94185121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8661249 + 3496900 = 2943^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 12158149 - 2³ = 12158141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12158149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12158141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079074 + 6079075.

It is an arithmetic number, because the mean of its divisors is an integer number (6079075).

Almost surely, 2^12158149 is an apocalyptic number.

It is an amenable number.

12158149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158149 is an equidigital number, since it uses as much as digits as its factorization.

12158149 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12158149 is about 3486.8537394046. The cubic root of 12158149 is about 229.9442145739.

The spelling of 12158149 in words is "twelve million, one hundred fifty-eight thousand, one hundred forty-nine".