1922745999720 has 384 divisors, whose sum is σ = 7606473436800. Its totient is φ = 384326498304.

The previous prime is 1922745999673. The next prime is 1922745999743. The reversal of 1922745999720 is 279995472291.

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 95 ways as a sum of consecutive naturals, for example, 790422 + ... + 2114298.

It is an arithmetic number, because the mean of its divisors is an integer number (19808524575).

Almost surely, 2^{1922745999720} is an apocalyptic number.

1922745999720 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 1922745999720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3803236718400).

1922745999720 is an abundant number, since it is smaller than the sum of its proper divisors (5683727437080).

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

1922745999720 is a wasteful number, since it uses less digits than its factorization.

1922745999720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323937 (or 1323926 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 66.

The spelling of 1922745999720 in words is "one trillion, nine hundred twenty-two billion, seven hundred forty-five million, nine hundred ninety-nine thousand, seven hundred twenty".