1801841740722 has 80 divisors (see below), whose sum is σ = 4183308993600. Its totient is φ = 578983114080.

The previous prime is 1801841740717. The next prime is 1801841740729. The reversal of 1801841740722 is 2270471481081.

1801841740722 is a `hidden beast` number, since 180 + 1 + 8 + 41 + 7 + 407 + 22 = 666.

It is not an unprimeable number, because it can be changed into a prime (1801841740729) 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, 2660529 + ... + 3268347.

It is an arithmetic number, because the mean of its divisors is an integer number (52291362420).

Almost surely, 2^{1801841740722} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801841740722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2091654496800).

1801841740722 is an abundant number, since it is smaller than the sum of its proper divisors (2381467252878).

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

1801841740722 is a wasteful number, since it uses less digits than its factorization.

1801841740722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608493 (or 608484 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 1801841740722 in words is "one trillion, eight hundred one billion, eight hundred forty-one million, seven hundred forty thousand, seven hundred twenty-two".