1980830280 has 256 divisors, whose sum is σ = 7065273600. Its totient is φ = 437944320.

The previous prime is 1980830263. The next prime is 1980830339. The reversal of 1980830280 is 820380891.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1526592 + ... + 1527888.

It is an arithmetic number, because the mean of its divisors is an integer number (27598725).

Almost surely, 2^1980830280 is an apocalyptic number.

1980830280 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 1980830280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3532636800).

1980830280 is an abundant number, since it is smaller than the sum of its proper divisors (5084443320).

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

1980830280 is a wasteful number, since it uses less digits than its factorization.

1980830280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1980830280 is about 44506.5195224250. The cubic root of 1980830280 is about 1255.8827310828.

The spelling of 1980830280 in words is "one billion, nine hundred eighty million, eight hundred thirty thousand, two hundred eighty".