18142866020 has 12 divisors (see below), whose sum is σ = 38100018684. Its totient is φ = 7257146400.

The previous prime is 18142866011. The next prime is 18142866041. The reversal of 18142866020 is 2066824181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9889506916 + 8253359104 = 99446^2 + 90848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453571631 + ... + 453571670.

It is an arithmetic number, because the mean of its divisors is an integer number (3175001557).

Almost surely, 2^18142866020 is an apocalyptic number.

18142866020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18142866020 is an abundant number, since it is smaller than the sum of its proper divisors (19957152664).

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

18142866020 is a wasteful number, since it uses less digits than its factorization.

18142866020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907143310 (or 907143308 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 18142866020 in words is "eighteen billion, one hundred forty-two million, eight hundred sixty-six thousand, twenty".