19926237792 has 96 divisors (see below), whose sum is σ = 54151130880. Its totient is φ = 6408174080.

The previous prime is 19926237791. The next prime is 19926237823. The reversal of 19926237792 is 29773262991.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19926237791) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6242917 + ... + 6246107.

It is an arithmetic number, because the mean of its divisors is an integer number (564074280).

Almost surely, 2^19926237792 is an apocalyptic number.

19926237792 is a gapful number since it is divisible by the number (12) 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 19926237792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27075565440).

19926237792 is an abundant number, since it is smaller than the sum of its proper divisors (34224893088).

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

19926237792 is a wasteful number, since it uses less digits than its factorization.

19926237792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476 (or 5468 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 57.

The spelling of 19926237792 in words is "nineteen billion, nine hundred twenty-six million, two hundred thirty-seven thousand, seven hundred ninety-two".