318854638829 has 2 divisors, whose sum is σ = 318854638830. Its totient is φ = 318854638828.

The previous prime is 318854638813. The next prime is 318854638931. The reversal of 318854638829 is 928836458813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313266328804 + 5588310025 = 559702^2 + 74755^2 .

It is a cyclic number.

It is not a de Polignac number, because 318854638829 - 2⁴ = 318854638813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318854638129) 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, 159427319414 + 159427319415.

It is an arithmetic number, because the mean of its divisors is an integer number (159427319415).

Almost surely, 2^318854638829 is an apocalyptic number.

It is an amenable number.

318854638829 is a deficient number, since it is larger than the sum of its proper divisors (1).

318854638829 is an equidigital number, since it uses as much as digits as its factorization.

318854638829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79626240, while the sum is 65.

The spelling of 318854638829 in words is "three hundred eighteen billion, eight hundred fifty-four million, six hundred thirty-eight thousand, eight hundred twenty-nine".