518424738 has 48 divisors (see below), whose sum is σ = 1171609920. Its totient is φ = 152572992.

The previous prime is 518424721. The next prime is 518424743. The reversal of 518424738 is 837424815.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 518424738.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12208 + ... + 34436.

It is an arithmetic number, because the mean of its divisors is an integer number (24408540).

Almost surely, 2^518424738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518424738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585804960).

518424738 is an abundant number, since it is smaller than the sum of its proper divisors (653185182).

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

518424738 is a wasteful number, since it uses less digits than its factorization.

518424738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22283 (or 22270 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 518424738 is about 22768.9423996812. The cubic root of 518424738 is about 803.3323180067.

The spelling of 518424738 in words is "five hundred eighteen million, four hundred twenty-four thousand, seven hundred thirty-eight".