318877329149 has 2 divisors, whose sum is σ = 318877329150. Its totient is φ = 318877329148.

The previous prime is 318877329103. The next prime is 318877329151. The reversal of 318877329149 is 941923778813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318829622500 + 47706649 = 564650^2 + 6907^2 .

It is a cyclic number.

It is not a de Polignac number, because 318877329149 - 2¹⁶ = 318877263613 is a prime.

Together with 318877329151, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 318877329091 and 318877329100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318877229149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159438664574 + 159438664575.

It is an arithmetic number, because the mean of its divisors is an integer number (159438664575).

Almost surely, 2^318877329149 is an apocalyptic number.

It is an amenable number.

318877329149 is a deficient number, since it is larger than the sum of its proper divisors (1).

318877329149 is an equidigital number, since it uses as much as digits as its factorization.

318877329149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 62.

The spelling of 318877329149 in words is "three hundred eighteen billion, eight hundred seventy-seven million, three hundred twenty-nine thousand, one hundred forty-nine".