518978074 has 16 divisors (see below), whose sum is σ = 825460200. Its totient is φ = 243869184.

The previous prime is 518978071. The next prime is 518978081. The reversal of 518978074 is 470879815.

It can be written as a sum of positive squares in 4 ways, for example, as 336539025 + 182439049 = 18345^2 + 13507^2 .

It is not an unprimeable number, because it can be changed into a prime (518978071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13342 + ... + 34870.

Almost surely, 2^518978074 is an apocalyptic number.

518978074 is a deficient number, since it is larger than the sum of its proper divisors (306482126).

518978074 is a wasteful number, since it uses less digits than its factorization.

518978074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22257.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 518978074 is about 22781.0902724167. The cubic root of 518978074 is about 803.6180262325.

The spelling of 518978074 in words is "five hundred eighteen million, nine hundred seventy-eight thousand, seventy-four".