19931082000 has 160 divisors (see below), whose sum is σ = 64374510720. Its totient is φ = 5305305600.

The previous prime is 19931081977. The next prime is 19931082007. The reversal of 19931082000 is 28013991.

It is not an unprimeable number, because it can be changed into a prime (19931082007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3675291 + ... + 3680709.

It is an arithmetic number, because the mean of its divisors is an integer number (402340692).

Almost surely, 2^19931082000 is an apocalyptic number.

19931082000 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 19931082000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32187255360).

19931082000 is an abundant number, since it is smaller than the sum of its proper divisors (44443428720).

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

19931082000 is a wasteful number, since it uses less digits than its factorization.

19931082000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

Adding to 19931082000 its reverse (28013991), we get a palindrome (19959095991).

The spelling of 19931082000 in words is "nineteen billion, nine hundred thirty-one million, eighty-two thousand".