518874916 has 18 divisors (see below), whose sum is σ = 1056281478. Its totient is φ = 222374880.

The previous prime is 518874911. The next prime is 518874919. The reversal of 518874916 is 619478815.

It can be written as a sum of positive squares in only one way, i.e., 404170816 + 114704100 = 20104^2 + 10710^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 518874916.

It is not an unprimeable number, because it can be changed into a prime (518874911) 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 in 5 ways as a sum of consecutive naturals, for example, 1323465 + ... + 1323856.

Almost surely, 2^518874916 is an apocalyptic number.

It is an amenable number.

518874916 is an abundant number, since it is smaller than the sum of its proper divisors (537406562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518874916 is a wasteful number, since it uses less digits than its factorization.

518874916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647339 (or 2647330 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 518874916 is about 22778.8260452553. The cubic root of 518874916 is about 803.5647772767.

The spelling of 518874916 in words is "five hundred eighteen million, eight hundred seventy-four thousand, nine hundred sixteen".