1817401322044 has 24 divisors (see below), whose sum is σ = 3965239248768. Its totient is φ = 708078437040.

The previous prime is 1817401322039. The next prime is 1817401322063. The reversal of 1817401322044 is 4402231047181.

It is a junction number, because it is equal to n+sod(n) for n = 1817401321994 and 1817401322012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950326514 + ... + 2950327129.

It is an arithmetic number, because the mean of its divisors is an integer number (165218302032).

Almost surely, 2^{1817401322044} is an apocalyptic number.

1817401322044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1817401322044 is an abundant number, since it is smaller than the sum of its proper divisors (2147837926724).

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

1817401322044 is a wasteful number, since it uses less digits than its factorization.

1817401322044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900653665 (or 5900653663 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 1817401322044 in words is "one trillion, eight hundred seventeen billion, four hundred one million, three hundred twenty-two thousand, forty-four".