19474839936 has 256 divisors, whose sum is σ = 59304268800. Its totient is φ = 6287708160.

The previous prime is 19474839911. The next prime is 19474839941. The reversal of 19474839936 is 63993847491.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23662821 + ... + 23663643.

It is an arithmetic number, because the mean of its divisors is an integer number (231657300).

Almost surely, 2^19474839936 is an apocalyptic number.

19474839936 is a gapful number since it is divisible by the number (16) 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 19474839936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29652134400).

19474839936 is an abundant number, since it is smaller than the sum of its proper divisors (39829428864).

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

19474839936 is a wasteful number, since it uses less digits than its factorization.

19474839936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1036 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 19474839936 in words is "nineteen billion, four hundred seventy-four million, eight hundred thirty-nine thousand, nine hundred thirty-six".