18853128080 has 20 divisors (see below), whose sum is σ = 43833522972. Its totient is φ = 7541251200.

The previous prime is 18853128079. The next prime is 18853128109. The reversal of 18853128080 is 8082135881.

It can be written as a sum of positive squares in 2 ways, for example, as 13367059456 + 5486068624 = 115616^2 + 74068^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117831971 + ... + 117832130.

Almost surely, 2^18853128080 is an apocalyptic number.

18853128080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18853128080 is an abundant number, since it is smaller than the sum of its proper divisors (24980394892).

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

18853128080 is a wasteful number, since it uses less digits than its factorization.

18853128080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235664114 (or 235664108 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 44.

The spelling of 18853128080 in words is "eighteen billion, eight hundred fifty-three million, one hundred twenty-eight thousand, eighty".