1980973056 has 120 divisors (see below), whose sum is σ = 5416778304. Its totient is φ = 643563520.

The previous prime is 1980973039. The next prime is 1980973153. The reversal of 1980973056 is 6503790891.

It is a super-3 number, since 3×1980973056³ (a number of 29 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1980972996 and 1980973014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2014741 + ... + 2015723.

Almost surely, 2^1980973056 is an apocalyptic number.

1980973056 is a gapful number since it is divisible by the number (16) 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 1980973056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2708389152).

1980973056 is an abundant number, since it is smaller than the sum of its proper divisors (3435805248).

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

1980973056 is an frugal number, since it uses more digits than its factorization.

1980973056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 1980973056 is about 44508.1234832474. The cubic root of 1980973056 is about 1255.9129045588.

The spelling of 1980973056 in words is "one billion, nine hundred eighty million, nine hundred seventy-three thousand, fifty-six".