1922478439680 has 432 divisors, whose sum is σ = 7063049644560. Its totient is φ = 481120223232.

The previous prime is 1922478439669. The next prime is 1922478439703. The reversal of 1922478439680 is 869348742291.

1922478439680 is a `hidden beast` number, since 1 + 92 + 2 + 4 + 7 + 84 + 396 + 80 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 35657524224 + 1886820915456 = 188832^2 + 1373616^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69117616 + ... + 69145424.

It is an arithmetic number, because the mean of its divisors is an integer number (16349651955).

Almost surely, 2^{1922478439680} is an apocalyptic number.

1922478439680 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 1922478439680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3531524822280).

1922478439680 is an abundant number, since it is smaller than the sum of its proper divisors (5140571204880).

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

1922478439680 is a wasteful number, since it uses less digits than its factorization.

1922478439680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28206 (or 28189 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 1922478439680 in words is "one trillion, nine hundred twenty-two billion, four hundred seventy-eight million, four hundred thirty-nine thousand, six hundred eighty".