518339412 has 84 divisors (see below), whose sum is σ = 1370294100. Its totient is φ = 171476352.

The previous prime is 518339411. The next prime is 518339413. The reversal of 518339412 is 214933815.

It is an interprime number because it is at equal distance from previous prime (518339411) and next prime (518339413).

It can be written as a sum of positive squares in 2 ways, for example, as 152917956 + 365421456 = 12366^2 + 19116^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518339411) 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 27 ways as a sum of consecutive naturals, for example, 433888 + ... + 435080.

It is an arithmetic number, because the mean of its divisors is an integer number (16313025).

Almost surely, 2^518339412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518339412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685147050).

518339412 is an abundant number, since it is smaller than the sum of its proper divisors (851954688).

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

518339412 is a wasteful number, since it uses less digits than its factorization.

518339412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1347 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 518339412 is about 22767.0685860082. The cubic root of 518339412 is about 803.2882428889.

The spelling of 518339412 in words is "five hundred eighteen million, three hundred thirty-nine thousand, four hundred twelve".