1788002140240 has 160 divisors (see below), whose sum is σ = 4248921980160. Its totient is φ = 699615055872.

The previous prime is 1788002140207. The next prime is 1788002140241. The reversal of 1788002140240 is 420412008871.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1788002140240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1788002140241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311658652 + ... + 311664388.

It is an arithmetic number, because the mean of its divisors is an integer number (26555762376).

Almost surely, 2^{1788002140240} is an apocalyptic number.

1788002140240 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 1788002140240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2124460990080).

1788002140240 is an abundant number, since it is smaller than the sum of its proper divisors (2460919839920).

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

1788002140240 is a wasteful number, since it uses less digits than its factorization.

1788002140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309 (or 6303 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The spelling of 1788002140240 in words is "one trillion, seven hundred eighty-eight billion, two million, one hundred forty thousand, two hundred forty".