1800043074000 has 400 divisors, whose sum is σ = 6545613531600. Its totient is φ = 476783539200.

The previous prime is 1800043073999. The next prime is 1800043074013. The reversal of 1800043074000 is 4703400081.

It can be written as a sum of positive squares in 8 ways, for example, as 776781347904 + 1023261726096 = 881352^2 + 1011564^2 .

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 24100714 + ... + 24175286.

It is an arithmetic number, because the mean of its divisors is an integer number (16364033829).

Almost surely, 2^{1800043074000} is an apocalyptic number.

1800043074000 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 1800043074000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3272806765800).

1800043074000 is an abundant number, since it is smaller than the sum of its proper divisors (4745570457600).

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

1800043074000 is a wasteful number, since it uses less digits than its factorization.

1800043074000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74757 (or 74732 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 1800043074000 its reverse (4703400081), we get a palindrome (1804746474081).

The spelling of 1800043074000 in words is "one trillion, eight hundred billion, forty-three million, seventy-four thousand".