1980650768 has 40 divisors (see below), whose sum is σ = 3908038560. Its totient is φ = 972172800.

The previous prime is 1980650761. The next prime is 1980650797. The reversal of 1980650768 is 8670560891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1980650761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132871 + ... + 1134617.

It is an arithmetic number, because the mean of its divisors is an integer number (97700964).

Almost surely, 2^1980650768 is an apocalyptic number.

It is an amenable number.

1980650768 is a deficient number, since it is larger than the sum of its proper divisors (1927387792).

1980650768 is a wasteful number, since it uses less digits than its factorization.

1980650768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015 (or 3009 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 1980650768 is about 44504.5027834263. The cubic root of 1980650768 is about 1255.8447919698.

The spelling of 1980650768 in words is "one billion, nine hundred eighty million, six hundred fifty thousand, seven hundred sixty-eight".