318877200449 has 2 divisors, whose sum is σ = 318877200450. Its totient is φ = 318877200448.

The previous prime is 318877200407. The next prime is 318877200451. The reversal of 318877200449 is 944002778813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245223040000 + 73654160449 = 495200^2 + 271393^2 .

It is a cyclic number.

It is not a de Polignac number, because 318877200449 - 2³² = 314582233153 is a prime.

Together with 318877200451, it forms a pair of twin primes.

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 318877200449.

It is not a weakly prime, because it can be changed into another prime (318877200479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159438600224 + 159438600225.

It is an arithmetic number, because the mean of its divisors is an integer number (159438600225).

Almost surely, 2^318877200449 is an apocalyptic number.

It is an amenable number.

318877200449 is a deficient number, since it is larger than the sum of its proper divisors (1).

318877200449 is an equidigital number, since it uses as much as digits as its factorization.

318877200449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 318877200449 in words is "three hundred eighteen billion, eight hundred seventy-seven million, two hundred thousand, four hundred forty-nine".