19393471020 has 288 divisors, whose sum is σ = 70571289600. Its totient is φ = 3890557440.

The previous prime is 19393471007. The next prime is 19393471043. The reversal of 19393471020 is 2017439391.

It is a super-2 number, since 2×19393471020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19393471020.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1467201 + ... + 1480359.

It is an arithmetic number, because the mean of its divisors is an integer number (245039200).

Almost surely, 2^19393471020 is an apocalyptic number.

19393471020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19393471020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35285644800).

19393471020 is an abundant number, since it is smaller than the sum of its proper divisors (51177818580).

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

19393471020 is a wasteful number, since it uses less digits than its factorization.

19393471020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13229 (or 13216 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 19393471020 in words is "nineteen billion, three hundred ninety-three million, four hundred seventy-one thousand, twenty".