19333949568 has 128 divisors (see below), whose sum is σ = 51826461120. Its totient is φ = 6385913856.

The previous prime is 19333949539. The next prime is 19333949603. The reversal of 19333949568 is 86594933391.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25539846 + ... + 25540602.

Almost surely, 2^19333949568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19333949568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25913230560).

19333949568 is an abundant number, since it is smaller than the sum of its proper divisors (32492511552).

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

19333949568 is a wasteful number, since it uses less digits than its factorization.

19333949568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1282 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 60.

The spelling of 19333949568 in words is "nineteen billion, three hundred thirty-three million, nine hundred forty-nine thousand, five hundred sixty-eight".