1920680273640 has 256 divisors, whose sum is σ = 5930204659200. Its totient is φ = 497464934400.

The previous prime is 1920680273597. The next prime is 1920680273651. The reversal of 1920680273640 is 463720860291.

It is a self number, because there is not a number n which added to its sum of digits gives 1920680273640.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 846486426 + ... + 846488694.

It is an arithmetic number, because the mean of its divisors is an integer number (23164861950).

Almost surely, 2^{1920680273640} is an apocalyptic number.

1920680273640 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 1920680273640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2965102329600).

1920680273640 is an abundant number, since it is smaller than the sum of its proper divisors (4009524385560).

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

1920680273640 is a wasteful number, since it uses less digits than its factorization.

1920680273640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788 (or 3784 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 1920680273640 in words is "one trillion, nine hundred twenty billion, six hundred eighty million, two hundred seventy-three thousand, six hundred forty".