19004746240 has 80 divisors (see below), whose sum is σ = 45657513000. Its totient is φ = 7586775040.

The previous prime is 19004746169. The next prime is 19004746247. The reversal of 19004746240 is 4264740091.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15372032256 + 3632713984 = 123984^2 + 60272^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×19004746240² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19004746240.

It is not an unprimeable number, because it can be changed into a prime (19004746247) 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 7 ways as a sum of consecutive naturals, for example, 1326636 + ... + 1340884.

Almost surely, 2^19004746240 is an apocalyptic number.

19004746240 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 19004746240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22828756500).

19004746240 is an abundant number, since it is smaller than the sum of its proper divisors (26652766760).

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

19004746240 is an equidigital number, since it uses as much as digits as its factorization.

19004746240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14793 (or 14777 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 19004746240 in words is "nineteen billion, four million, seven hundred forty-six thousand, two hundred forty".