19013044730820 has 384 divisors, whose sum is σ = 64262277488640. Its totient is φ = 4103100334080.

The previous prime is 19013044730803. The next prime is 19013044730857. The reversal of 19013044730820 is 2803744031091.

It is a super-2 number, since 2×19013044730820² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3043544937 + ... + 3043551183.

It is an arithmetic number, because the mean of its divisors is an integer number (167349680960).

Almost surely, 2^{19013044730820} is an apocalyptic number.

19013044730820 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 19013044730820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32131138744320).

19013044730820 is an abundant number, since it is smaller than the sum of its proper divisors (45249232757820).

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

19013044730820 is a wasteful number, since it uses less digits than its factorization.

19013044730820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523 (or 7521 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 19013044730820 in words is "nineteen trillion, thirteen billion, forty-four million, seven hundred thirty thousand, eight hundred twenty".