12318354149 has 2 divisors, whose sum is σ = 12318354150. Its totient is φ = 12318354148.

The previous prime is 12318354143. The next prime is 12318354197. The reversal of 12318354149 is 94145381321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10614150625 + 1704203524 = 103025^2 + 41282^2 .

It is an emirp because it is prime and its reverse (94145381321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12318354149 - 2¹² = 12318350053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318354143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159177074 + 6159177075.

It is an arithmetic number, because the mean of its divisors is an integer number (6159177075).

Almost surely, 2^12318354149 is an apocalyptic number.

It is an amenable number.

12318354149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318354149 is an equidigital number, since it uses as much as digits as its factorization.

12318354149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The spelling of 12318354149 in words is "twelve billion, three hundred eighteen million, three hundred fifty-four thousand, one hundred forty-nine".