518413849 has 2 divisors, whose sum is σ = 518413850. Its totient is φ = 518413848.

The previous prime is 518413817. The next prime is 518413877. The reversal of 518413849 is 948314815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298425625 + 219988224 = 17275^2 + 14832^2 .

It is a cyclic number.

It is not a de Polignac number, because 518413849 - 2⁵ = 518413817 is a prime.

It is not a weakly prime, because it can be changed into another prime (518413949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259206924 + 259206925.

It is an arithmetic number, because the mean of its divisors is an integer number (259206925).

Almost surely, 2^518413849 is an apocalyptic number.

It is an amenable number.

518413849 is a deficient number, since it is larger than the sum of its proper divisors (1).

518413849 is an equidigital number, since it uses as much as digits as its factorization.

518413849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 518413849 is about 22768.7032788431. The cubic root of 518413849 is about 803.3266935665.

The spelling of 518413849 in words is "five hundred eighteen million, four hundred thirteen thousand, eight hundred forty-nine".