19903320000 has 350 divisors, whose sum is σ = 73737996288. Its totient is φ = 5306688000.

The previous prime is 19903319999. The next prime is 19903320083. The reversal of 19903320000 is 2330991.

It is a super-2 number, since 2×19903320000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 3236929 + ... + 3243071.

Almost surely, 2^19903320000 is an apocalyptic number.

19903320000 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 19903320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36868998144).

19903320000 is an abundant number, since it is smaller than the sum of its proper divisors (53834676288).

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

19903320000 is an frugal number, since it uses more digits than its factorization.

19903320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6187 (or 6153 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

Adding to 19903320000 its reverse (2330991), we get a palindrome (19905650991).

The spelling of 19903320000 in words is "nineteen billion, nine hundred three million, three hundred twenty thousand".