18382002020 has 48 divisors (see below), whose sum is σ = 39130484400. Its totient is φ = 7252723200.

The previous prime is 18382002011. The next prime is 18382002073. The reversal of 18382002020 is 2020028381.

It can be written as a sum of positive squares in 8 ways, for example, as 107288164 + 18274713856 = 10358^2 + 135184^2 .

It is a super-3 number, since 3×18382002020³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 526466 + ... + 560294.

It is an arithmetic number, because the mean of its divisors is an integer number (815218425).

Almost surely, 2^18382002020 is an apocalyptic number.

18382002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18382002020 is an abundant number, since it is smaller than the sum of its proper divisors (20748482380).

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

18382002020 is a wasteful number, since it uses less digits than its factorization.

18382002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34208 (or 34206 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 18382002020 in words is "eighteen billion, three hundred eighty-two million, two thousand, twenty".