518649347 has 2 divisors, whose sum is σ = 518649348. Its totient is φ = 518649346.

The previous prime is 518649323. The next prime is 518649349. The reversal of 518649347 is 743946815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 518649347 - 2⁶ = 518649283 is a prime.

Together with 518649349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (518649349) 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, 259324673 + 259324674.

It is an arithmetic number, because the mean of its divisors is an integer number (259324674).

Almost surely, 2^518649347 is an apocalyptic number.

518649347 is a deficient number, since it is larger than the sum of its proper divisors (1).

518649347 is an equidigital number, since it uses as much as digits as its factorization.

518649347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 518649347 is about 22773.8742202551. The cubic root of 518649347 is about 803.4483165973.

The spelling of 518649347 in words is "five hundred eighteen million, six hundred forty-nine thousand, three hundred forty-seven".