1873121619720 has 384 divisors, whose sum is σ = 6302075529600. Its totient is φ = 444655411200.

The previous prime is 1873121619703. The next prime is 1873121619757. The reversal of 1873121619720 is 279161213781.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1873121619720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 776905315 + ... + 776907725.

It is an arithmetic number, because the mean of its divisors is an integer number (16411655025).

Almost surely, 2^{1873121619720} is an apocalyptic number.

1873121619720 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 1873121619720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3151037764800).

1873121619720 is an abundant number, since it is smaller than the sum of its proper divisors (4428953909880).

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

1873121619720 is a wasteful number, since it uses less digits than its factorization.

1873121619720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801 (or 3784 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 1873121619720 in words is "one trillion, eight hundred seventy-three billion, one hundred twenty-one million, six hundred nineteen thousand, seven hundred twenty".