1822203665140 has 96 divisors (see below), whose sum is σ = 4039019712000. Its totient is φ = 688637832192.

The previous prime is 1822203665131. The next prime is 1822203665171. The reversal of 1822203665140 is 415663022281.

It is a junction number, because it is equal to n+sod(n) for n = 1822203665093 and 1822203665102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242020896 + ... + 242028424.

It is an arithmetic number, because the mean of its divisors is an integer number (42073122000).

Almost surely, 2^{1822203665140} is an apocalyptic number.

1822203665140 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 1822203665140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019509856000).

1822203665140 is an abundant number, since it is smaller than the sum of its proper divisors (2216816046860).

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

1822203665140 is a wasteful number, since it uses less digits than its factorization.

1822203665140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9209 (or 9207 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 1822203665140 in words is "one trillion, eight hundred twenty-two billion, two hundred three million, six hundred sixty-five thousand, one hundred forty".