518118371 has 2 divisors, whose sum is σ = 518118372. Its totient is φ = 518118370.

The previous prime is 518118347. The next prime is 518118373. The reversal of 518118371 is 173811815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518118371 is a prime.

Together with 518118373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (518118373) 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, 259059185 + 259059186.

It is an arithmetic number, because the mean of its divisors is an integer number (259059186).

Almost surely, 2^518118371 is an apocalyptic number.

518118371 is a deficient number, since it is larger than the sum of its proper divisors (1).

518118371 is an equidigital number, since it uses as much as digits as its factorization.

518118371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 35.

The square root of 518118371 is about 22762.2136665132. The cubic root of 518118371 is about 803.1740417317.

The spelling of 518118371 in words is "five hundred eighteen million, one hundred eighteen thousand, three hundred seventy-one".