1944500683440 has 160 divisors (see below), whose sum is σ = 6919172858880. Its totient is φ = 442516349952.

The previous prime is 1944500683421. The next prime is 1944500683441. The reversal of 1944500683440 is 443860054491.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1944500683440.

It is not an unprimeable number, because it can be changed into a prime (1944500683441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2142444 + ... + 2911883.

It is an arithmetic number, because the mean of its divisors is an integer number (43244830368).

Almost surely, 2^{1944500683440} is an apocalyptic number.

1944500683440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944500683440 is an abundant number, since it is smaller than the sum of its proper divisors (4974672175440).

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

1944500683440 is a wasteful number, since it uses less digits than its factorization.

1944500683440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054579 (or 5054573 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 1944500683440 in words is "one trillion, nine hundred forty-four billion, five hundred million, six hundred eighty-three thousand, four hundred forty".