243119148149 has 2 divisors, whose sum is σ = 243119148150. Its totient is φ = 243119148148.

The previous prime is 243119148143. The next prime is 243119148157. The reversal of 243119148149 is 941841911342.

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., 126159936100 + 116959212049 = 355190^2 + 341993^2 .

It is a cyclic number.

It is not a de Polignac number, because 243119148149 - 2⁴ = 243119148133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243119148143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121559574074 + 121559574075.

It is an arithmetic number, because the mean of its divisors is an integer number (121559574075).

Almost surely, 2^243119148149 is an apocalyptic number.

It is an amenable number.

243119148149 is a deficient number, since it is larger than the sum of its proper divisors (1).

243119148149 is an equidigital number, since it uses as much as digits as its factorization.

243119148149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 47.

The spelling of 243119148149 in words is "two hundred forty-three billion, one hundred nineteen million, one hundred forty-eight thousand, one hundred forty-nine".