19128960020 has 24 divisors (see below), whose sum is σ = 40292191968. Its totient is φ = 7628464800.

The previous prime is 19128959987. The next prime is 19128960023. The reversal of 19128960020 is 2006982191.

It is a super-2 number, since 2×19128960020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19128960023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1438166 + ... + 1451405.

It is an arithmetic number, because the mean of its divisors is an integer number (1678841332).

Almost surely, 2^19128960020 is an apocalyptic number.

19128960020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19128960020 is an abundant number, since it is smaller than the sum of its proper divisors (21163231948).

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

19128960020 is a wasteful number, since it uses less digits than its factorization.

19128960020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889911 (or 2889909 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 19128960020 in words is "nineteen billion, one hundred twenty-eight million, nine hundred sixty thousand, twenty".