19487136000 has 288 divisors, whose sum is σ = 66318610176. Its totient is φ = 5068800000.

The previous prime is 19487135999. The next prime is 19487136007. The reversal of 19487136000 is 63178491.

It is a self number, because there is not a number n which added to its sum of digits gives 19487136000.

It is not an unprimeable number, because it can be changed into a prime (19487136007) 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, 3933525 + ... + 3938475.

It is an arithmetic number, because the mean of its divisors is an integer number (230272952).

Almost surely, 2^19487136000 is an apocalyptic number.

19487136000 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 19487136000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33159305088).

19487136000 is an abundant number, since it is smaller than the sum of its proper divisors (46831474176).

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

19487136000 is an equidigital number, since it uses as much as digits as its factorization.

19487136000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026 (or 5002 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 19487136000 in words is "nineteen billion, four hundred eighty-seven million, one hundred thirty-six thousand".