1980707980 has 12 divisors (see below), whose sum is σ = 4159486800. Its totient is φ = 792283184.

The previous prime is 1980707879. The next prime is 1980707983. The reversal of 1980707980 is 897070891.

It is not an unprimeable number, because it can be changed into a prime (1980707983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49517680 + ... + 49517719.

It is an arithmetic number, because the mean of its divisors is an integer number (346623900).

Almost surely, 2^1980707980 is an apocalyptic number.

1980707980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980707980 is an abundant number, since it is smaller than the sum of its proper divisors (2178778820).

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

1980707980 is a wasteful number, since it uses less digits than its factorization.

1980707980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99035408 (or 99035406 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 1980707980 is about 44505.1455452063. The cubic root of 1980707980 is about 1255.8568837364.

The spelling of 1980707980 in words is "one billion, nine hundred eighty million, seven hundred seven thousand, nine hundred eighty".