518464789 has 2 divisors, whose sum is σ = 518464790. Its totient is φ = 518464788.

The previous prime is 518464777. The next prime is 518464823. The reversal of 518464789 is 987464815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346592689 + 171872100 = 18617^2 + 13110^2 .

It is a cyclic number.

It is not a de Polignac number, because 518464789 - 2¹¹ = 518462741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518464189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259232394 + 259232395.

It is an arithmetic number, because the mean of its divisors is an integer number (259232395).

Almost surely, 2^518464789 is an apocalyptic number.

It is an amenable number.

518464789 is a deficient number, since it is larger than the sum of its proper divisors (1).

518464789 is an equidigital number, since it uses as much as digits as its factorization.

518464789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The square root of 518464789 is about 22769.8218921449. The cubic root of 518464789 is about 803.3530046701.

The spelling of 518464789 in words is "five hundred eighteen million, four hundred sixty-four thousand, seven hundred eighty-nine".