1940488680420 has 144 divisors (see below), whose sum is σ = 6197463679680. Its totient is φ = 490108665600.

The previous prime is 1940488680397. The next prime is 1940488680469. The reversal of 1940488680420 is 240868840491.

It is a happy number.

1940488680420 is a `hidden beast` number, since 1 + 9 + 40 + 488 + 6 + 80 + 42 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14334250 + ... + 14468990.

It is an arithmetic number, because the mean of its divisors is an integer number (43037942220).

Almost surely, 2^{1940488680420} is an apocalyptic number.

1940488680420 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 1940488680420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3098731839840).

1940488680420 is an abundant number, since it is smaller than the sum of its proper divisors (4256974999260).

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

1940488680420 is a wasteful number, since it uses less digits than its factorization.

1940488680420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138986 (or 138981 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 1940488680420 in words is "one trillion, nine hundred forty billion, four hundred eighty-eight million, six hundred eighty thousand, four hundred twenty".