1803223442944 has 640 divisors, whose sum is σ = 4918005227520. Its totient is φ = 639054643200.

The previous prime is 1803223442861. The next prime is 1803223442953. The reversal of 1803223442944 is 4492443223081.

It is a super-2 number, since 2×1803223442944² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1803223442894 and 1803223442903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3764558097 + ... + 3764558575.

It is an arithmetic number, because the mean of its divisors is an integer number (7684383168).

Almost surely, 2^{1803223442944} is an apocalyptic number.

1803223442944 is a gapful number since it is divisible by the number (14) 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 1803223442944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2459002613760).

1803223442944 is an abundant number, since it is smaller than the sum of its proper divisors (3114781784576).

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

1803223442944 is a wasteful number, since it uses less digits than its factorization.

1803223442944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 1803223442944 in words is "one trillion, eight hundred three billion, two hundred twenty-three million, four hundred forty-two thousand, nine hundred forty-four".