19940595000 has 640 divisors, whose sum is σ = 70657382400. Its totient is φ = 4665600000.

The previous prime is 19940594983. The next prime is 19940595089. The reversal of 19940595000 is 59504991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 326894970 + ... + 326895030.

It is an arithmetic number, because the mean of its divisors is an integer number (110402160).

Almost surely, 2^19940595000 is an apocalyptic number.

19940595000 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 19940595000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35328691200).

19940595000 is an abundant number, since it is smaller than the sum of its proper divisors (50716787400).

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

19940595000 is a wasteful number, since it uses less digits than its factorization.

19940595000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 42.

The spelling of 19940595000 in words is "nineteen billion, nine hundred forty million, five hundred ninety-five thousand".