1940280797520 has 1120 divisors, whose sum is σ = 7878932716032. Its totient is φ = 439811555328.

The previous prime is 1940280797491. The next prime is 1940280797573. The reversal of 1940280797520 is 257970820491.

1940280797520 is a `hidden beast` number, since 1 + 9 + 4 + 0 + 28 + 0 + 7 + 97 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 605768239 + ... + 605771441.

Almost surely, 2^{1940280797520} is an apocalyptic number.

1940280797520 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 1940280797520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3939466358016).

1940280797520 is an abundant number, since it is smaller than the sum of its proper divisors (5938651918512).

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

1940280797520 is a wasteful number, since it uses less digits than its factorization.

1940280797520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311 (or 3290 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 1940280797520 in words is "one trillion, nine hundred forty billion, two hundred eighty million, seven hundred ninety-seven thousand, five hundred twenty".