1783313870220 has 120 divisors (see below), whose sum is σ = 5596130002848. Its totient is φ = 475396646400.

The previous prime is 1783313870201. The next prime is 1783313870227. The reversal of 1783313870220 is 220783133871.

It is a happy number.

1783313870220 is a `hidden beast` number, since 17 + 8 + 3 + 31 + 387 + 0 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1783313870227) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4879665 + ... + 5232375.

Almost surely, 2^{1783313870220} is an apocalyptic number.

1783313870220 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 1783313870220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798065001424).

1783313870220 is an abundant number, since it is smaller than the sum of its proper divisors (3812816132628).

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

1783313870220 is a wasteful number, since it uses less digits than its factorization.

1783313870220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355853 (or 355842 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 1783313870220 in words is "one trillion, seven hundred eighty-three billion, three hundred thirteen million, eight hundred seventy thousand, two hundred twenty".