518082857 has 2 divisors, whose sum is σ = 518082858. Its totient is φ = 518082856.

The previous prime is 518082853. The next prime is 518082907. The reversal of 518082857 is 758280815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274598041 + 243484816 = 16571^2 + 15604^2 .

It is a cyclic number.

It is not a de Polignac number, because 518082857 - 2² = 518082853 is a prime.

It is not a weakly prime, because it can be changed into another prime (518082853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259041428 + 259041429.

It is an arithmetic number, because the mean of its divisors is an integer number (259041429).

Almost surely, 2^518082857 is an apocalyptic number.

It is an amenable number.

518082857 is a deficient number, since it is larger than the sum of its proper divisors (1).

518082857 is an equidigital number, since it uses as much as digits as its factorization.

518082857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 44.

The square root of 518082857 is about 22761.4335444848. The cubic root of 518082857 is about 803.1556903431.

The spelling of 518082857 in words is "five hundred eighteen million, eighty-two thousand, eight hundred fifty-seven".