518134730 has 16 divisors (see below), whose sum is σ = 933118920. Its totient is φ = 207148032.

The previous prime is 518134723. The next prime is 518134733. The reversal of 518134730 is 37431815.

It can be written as a sum of positive squares in 4 ways, for example, as 496353841 + 21780889 = 22279^2 + 4667^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (518134733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9122 + ... + 33458.

Almost surely, 2^518134730 is an apocalyptic number.

518134730 is a deficient number, since it is larger than the sum of its proper divisors (414984190).

518134730 is a wasteful number, since it uses less digits than its factorization.

518134730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26473.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 518134730 is about 22762.5730092184. The cubic root of 518134730 is about 803.1824947459.

The spelling of 518134730 in words is "five hundred eighteen million, one hundred thirty-four thousand, seven hundred thirty".