18828971328 has 28 divisors (see below), whose sum is σ = 49818320480. Its totient is φ = 6276323712.

The previous prime is 18828971269. The next prime is 18828971347. The reversal of 18828971328 is 82317982881.

It is a super-2 number, since 2×18828971328² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49033588 + ... + 49033971.

Almost surely, 2^18828971328 is an apocalyptic number.

It is an amenable number.

18828971328 is an abundant number, since it is smaller than the sum of its proper divisors (30989349152).

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

18828971328 is an equidigital number, since it uses as much as digits as its factorization.

18828971328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98067574 (or 98067564 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 57.

The spelling of 18828971328 in words is "eighteen billion, eight hundred twenty-eight million, nine hundred seventy-one thousand, three hundred twenty-eight".