18796357440 has 336 divisors, whose sum is σ = 74152670592. Its totient is φ = 4280905728.

The previous prime is 18796357397. The next prime is 18796357471. The reversal of 18796357440 is 4475369781.

18796357440 is a `hidden beast` number, since 1 + 8 + 7 + 9 + 63 + 574 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 6187602 + ... + 6190638.

It is an arithmetic number, because the mean of its divisors is an integer number (220692472).

Almost surely, 2^18796357440 is an apocalyptic number.

18796357440 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 18796357440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37076335296).

18796357440 is an abundant number, since it is smaller than the sum of its proper divisors (55356313152).

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

18796357440 is a wasteful number, since it uses less digits than its factorization.

18796357440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 18796357440 in words is "eighteen billion, seven hundred ninety-six million, three hundred fifty-seven thousand, four hundred forty".