19196521344 has 1024 divisors, whose sum is σ = 78962688000. Its totient is φ = 4429209600.

The previous prime is 19196521343. The next prime is 19196521367. The reversal of 19196521344 is 44312569191.

19196521344 is a `hidden beast` number, since 1 + 9 + 1 + 96 + 521 + 34 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19196521344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19196521343) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 107243047 + ... + 107243225.

It is an arithmetic number, because the mean of its divisors is an integer number (77112000).

Almost surely, 2^19196521344 is an apocalyptic number.

19196521344 is a gapful number since it is divisible by the number (14) 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 19196521344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39481344000).

19196521344 is an abundant number, since it is smaller than the sum of its proper divisors (59766166656).

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

19196521344 is a wasteful number, since it uses less digits than its factorization.

19196521344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 246 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

It can be divided in two parts, 1919652 and 1344, that added together give a square (1920996 = 1386²).

The spelling of 19196521344 in words is "nineteen billion, one hundred ninety-six million, five hundred twenty-one thousand, three hundred forty-four".