19593948240 has 120 divisors (see below), whose sum is σ = 66283657128. Its totient is φ = 5186887680.

The previous prime is 19593948217. The next prime is 19593948251. The reversal of 19593948240 is 4284939591.

19593948240 is a `hidden beast` number, since 1 + 9 + 5 + 9 + 394 + 8 + 240 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6217637904 + 13376310336 = 78852^2 + 115656^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 681 + ... + 197960.

Almost surely, 2^19593948240 is an apocalyptic number.

19593948240 is a gapful number since it is divisible by the number (10) 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 19593948240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33141828564).

19593948240 is an abundant number, since it is smaller than the sum of its proper divisors (46689708888).

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

19593948240 is a wasteful number, since it uses less digits than its factorization.

19593948240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198797 (or 198788 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 19593948240 in words is "nineteen billion, five hundred ninety-three million, nine hundred forty-eight thousand, two hundred forty".