19538142000 has 160 divisors (see below), whose sum is σ = 67836699840. Its totient is φ = 4809369600.

The previous prime is 19538141999. The next prime is 19538142031. The reversal of 19538142000 is 24183591.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47245 + ... + 203244.

It is an arithmetic number, because the mean of its divisors is an integer number (423979374).

Almost surely, 2^19538142000 is an apocalyptic number.

19538142000 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 19538142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33918349920).

19538142000 is an abundant number, since it is smaller than the sum of its proper divisors (48298557840).

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

19538142000 is a wasteful number, since it uses less digits than its factorization.

19538142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250528 (or 250512 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 19538142000 in words is "nineteen billion, five hundred thirty-eight million, one hundred forty-two thousand".