19078732008 has 256 divisors, whose sum is σ = 62724096000. Its totient is φ = 5258131200.

The previous prime is 19078731923. The next prime is 19078732009. The reversal of 19078732008 is 80023787091.

It is not an unprimeable number, because it can be changed into a prime (19078732009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23013738 + ... + 23014566.

It is an arithmetic number, because the mean of its divisors is an integer number (245016000).

Almost surely, 2^19078732008 is an apocalyptic number.

19078732008 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 19078732008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31362048000).

19078732008 is an abundant number, since it is smaller than the sum of its proper divisors (43645363992).

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

19078732008 is a wasteful number, since it uses less digits than its factorization.

19078732008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1363 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 19078732008 in words is "nineteen billion, seventy-eight million, seven hundred thirty-two thousand, eight".