518419117 has 2 divisors, whose sum is σ = 518419118. Its totient is φ = 518419116.

The previous prime is 518419091. The next prime is 518419141. The reversal of 518419117 is 711914815.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455993316 + 62425801 = 21354^2 + 7901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518419117 is a prime.

It is equal to p_27273835 and since 518419117 and 27273835 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518419177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259209558 + 259209559.

It is an arithmetic number, because the mean of its divisors is an integer number (259209559).

Almost surely, 2^518419117 is an apocalyptic number.

It is an amenable number.

518419117 is a deficient number, since it is larger than the sum of its proper divisors (1).

518419117 is an equidigital number, since it uses as much as digits as its factorization.

518419117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 37.

The square root of 518419117 is about 22768.8189636617. The cubic root of 518419117 is about 803.3294146298.

The spelling of 518419117 in words is "five hundred eighteen million, four hundred nineteen thousand, one hundred seventeen".