318919829 has 2 divisors, whose sum is σ = 318919830. Its totient is φ = 318919828.

The previous prime is 318919823. The next prime is 318919837. The reversal of 318919829 is 928919813.

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., 234243025 + 84676804 = 15305^2 + 9202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318919829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318919823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159459914 + 159459915.

It is an arithmetic number, because the mean of its divisors is an integer number (159459915).

Almost surely, 2^318919829 is an apocalyptic number.

It is an amenable number.

318919829 is a deficient number, since it is larger than the sum of its proper divisors (1).

318919829 is an equidigital number, since it uses as much as digits as its factorization.

318919829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 50.

The square root of 318919829 is about 17858.3266013364. The cubic root of 318919829 is about 683.2199000818.

The spelling of 318919829 in words is "three hundred eighteen million, nine hundred nineteen thousand, eight hundred twenty-nine".