19819365832 has 128 divisors (see below), whose sum is σ = 45280800000. Its totient is φ = 7951426560.

The previous prime is 19819365829. The next prime is 19819365859. The reversal of 19819365832 is 23856391891.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29983582 + ... + 29984242.

It is an arithmetic number, because the mean of its divisors is an integer number (353756250).

Almost surely, 2^19819365832 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 19819365832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22640400000).

19819365832 is an abundant number, since it is smaller than the sum of its proper divisors (25461434168).

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

19819365832 is a wasteful number, since it uses less digits than its factorization.

19819365832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1235 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 55.

The spelling of 19819365832 in words is "nineteen billion, eight hundred nineteen million, three hundred sixty-five thousand, eight hundred thirty-two".