1919322473472 has 704 divisors, whose sum is σ = 6224517600000. Its totient is φ = 583524974592.

The previous prime is 1919322473461. The next prime is 1919322473477. The reversal of 1919322473472 is 2743742239191.

1919322473472 is a `hidden beast` number, since 19 + 1 + 93 + 2 + 2 + 4 + 73 + 472 = 666.

It is a super-2 number, since 2×1919322473472² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1919322473477) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5499491154 + ... + 5499491502.

Almost surely, 2^{1919322473472} is an apocalyptic number.

1919322473472 is a gapful number since it is divisible by the number (12) 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 1919322473472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3112258800000).

1919322473472 is an abundant number, since it is smaller than the sum of its proper divisors (4305195126528).

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

1919322473472 is an equidigital number, since it uses as much as digits as its factorization.

1919322473472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 402 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The spelling of 1919322473472 in words is "one trillion, nine hundred nineteen billion, three hundred twenty-two million, four hundred seventy-three thousand, four hundred seventy-two".