2018382168520 has 16 divisors (see below), whose sum is σ = 4541359879260. Its totient is φ = 807352867392.

The previous prime is 2018382168497. The next prime is 2018382168527. The reversal of 2018382168520 is 258612838102.

It can be written as a sum of positive squares in 2 ways, for example, as 1974064340196 + 44317828324 = 1405014^2 + 210518^2 .

It is not an unprimeable number, because it can be changed into a prime (2018382168527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25229777067 + ... + 25229777146.

Almost surely, 2^{2018382168520} is an apocalyptic number.

2018382168520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2018382168520 is an abundant number, since it is smaller than the sum of its proper divisors (2522977710740).

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

2018382168520 is a wasteful number, since it uses less digits than its factorization.

2018382168520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50459554224 (or 50459554220 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 2018382168520 in words is "two trillion, eighteen billion, three hundred eighty-two million, one hundred sixty-eight thousand, five hundred twenty".