518461049 has 2 divisors, whose sum is σ = 518461050. Its totient is φ = 518461048.

The previous prime is 518461033. The next prime is 518461051. The reversal of 518461049 is 940164815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 463627024 + 54834025 = 21532^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 518461049 - 2⁴ = 518461033 is a prime.

It is a Sophie Germain prime.

Together with 518461051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (518431049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259230524 + 259230525.

It is an arithmetic number, because the mean of its divisors is an integer number (259230525).

Almost surely, 2^518461049 is an apocalyptic number.

It is an amenable number.

518461049 is a deficient number, since it is larger than the sum of its proper divisors (1).

518461049 is an equidigital number, since it uses as much as digits as its factorization.

518461049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 518461049 is about 22769.7397657505. The cubic root of 518461049 is about 803.3510729751.

The spelling of 518461049 in words is "five hundred eighteen million, four hundred sixty-one thousand, forty-nine".