19208814408 has 192 divisors, whose sum is σ = 62826192000. Its totient is φ = 5179355136.

The previous prime is 19208814353. The next prime is 19208814409. The reversal of 19208814408 is 80441880291.

It is not an unprimeable number, because it can be changed into a prime (19208814409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2572216 + ... + 2579672.

It is an arithmetic number, because the mean of its divisors is an integer number (327219750).

Almost surely, 2^19208814408 is an apocalyptic number.

19208814408 is a gapful number since it is divisible by the number (18) 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 19208814408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31413096000).

19208814408 is an abundant number, since it is smaller than the sum of its proper divisors (43617377592).

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

19208814408 is a wasteful number, since it uses less digits than its factorization.

19208814408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764 (or 7757 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 19208814408 in words is "nineteen billion, two hundred eight million, eight hundred fourteen thousand, four hundred eight".