518321411 has 2 divisors, whose sum is σ = 518321412. Its totient is φ = 518321410.

The previous prime is 518321369. The next prime is 518321413. The reversal of 518321411 is 114123815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518321411 is a prime.

It is a Sophie Germain prime.

Together with 518321413, 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 (518321413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259160705 + 259160706.

It is an arithmetic number, because the mean of its divisors is an integer number (259160706).

Almost surely, 2^518321411 is an apocalyptic number.

518321411 is a deficient number, since it is larger than the sum of its proper divisors (1).

518321411 is an equidigital number, since it uses as much as digits as its factorization.

518321411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 26.

The square root of 518321411 is about 22766.6732528053. The cubic root of 518321411 is about 803.2789438603.

The spelling of 518321411 in words is "five hundred eighteen million, three hundred twenty-one thousand, four hundred eleven".