1783490225920 has 288 divisors, whose sum is σ = 4887064288512. Its totient is φ = 617772220416.

The previous prime is 1783490225917. The next prime is 1783490225929. The reversal of 1783490225920 is 295220943871.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1783490225929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88531369 + ... + 88551511.

It is an arithmetic number, because the mean of its divisors is an integer number (16968973224).

Almost surely, 2^{1783490225920} is an apocalyptic number.

1783490225920 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 1783490225920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2443532144256).

1783490225920 is an abundant number, since it is smaller than the sum of its proper divisors (3103574062592).

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

1783490225920 is a wasteful number, since it uses less digits than its factorization.

1783490225920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20507 (or 20493 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 1783490225920 in words is "one trillion, seven hundred eighty-three billion, four hundred ninety million, two hundred twenty-five thousand, nine hundred twenty".