518136486 has 64 divisors (see below), whose sum is σ = 1214976000. Its totient is φ = 147244608.

The previous prime is 518136481. The next prime is 518136503. The reversal of 518136486 is 684631815.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518136481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458370 + ... + 459498.

It is an arithmetic number, because the mean of its divisors is an integer number (18984000).

Almost surely, 2^518136486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518136486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607488000).

518136486 is an abundant number, since it is smaller than the sum of its proper divisors (696839514).

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

518136486 is a wasteful number, since it uses less digits than its factorization.

518136486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1364 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 518136486 is about 22762.6115812751. The cubic root of 518136486 is about 803.1834020947.

The spelling of 518136486 in words is "five hundred eighteen million, one hundred thirty-six thousand, four hundred eighty-six".