19142539000 has 256 divisors, whose sum is σ = 49566142080. Its totient is φ = 6876979200.

The previous prime is 19142538997. The next prime is 19142539021. The reversal of 19142539000 is 93524191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 121926922 + ... + 121927078.

Almost surely, 2^19142539000 is an apocalyptic number.

19142539000 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 19142539000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24783071040).

19142539000 is an abundant number, since it is smaller than the sum of its proper divisors (30423603080).

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

19142539000 is a wasteful number, since it uses less digits than its factorization.

19142539000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 19142539000 in words is "nineteen billion, one hundred forty-two million, five hundred thirty-nine thousand".