518755140 has 72 divisors (see below), whose sum is σ = 1600260480. Its totient is φ = 135987264.

The previous prime is 518755129. The next prime is 518755141. The reversal of 518755140 is 41557815.

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

It is a junction number, because it is equal to n+sod(n) for n = 518755095 and 518755104.

It is not an unprimeable number, because it can be changed into a prime (518755141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13804 + ... + 35043.

It is an arithmetic number, because the mean of its divisors is an integer number (22225840).

Almost surely, 2^518755140 is an apocalyptic number.

It is an amenable number.

518755140 is an abundant number, since it is smaller than the sum of its proper divisors (1081505340).

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

518755140 is a wasteful number, since it uses less digits than its factorization.

518755140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48921 (or 48916 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 36.

The square root of 518755140 is about 22776.1967852405. The cubic root of 518755140 is about 803.5029414478.

The spelling of 518755140 in words is "five hundred eighteen million, seven hundred fifty-five thousand, one hundred forty".