19424413008 has 1440 divisors, whose sum is σ = 82986688512. Its totient is φ = 4311014400.

The previous prime is 19424413003. The next prime is 19424413009. The reversal of 19424413008 is 80031442491.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19424413003) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 626593953 + ... + 626593983.

Almost surely, 2^19424413008 is an apocalyptic number.

19424413008 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 19424413008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41493344256).

19424413008 is an abundant number, since it is smaller than the sum of its proper divisors (63562275504).

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

19424413008 is a wasteful number, since it uses less digits than its factorization.

19424413008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Adding to 19424413008 its reverse (80031442491), we get a palindrome (99455855499).

The spelling of 19424413008 in words is "nineteen billion, four hundred twenty-four million, four hundred thirteen thousand, eight".