1980385286 has 16 divisors (see below), whose sum is σ = 3245278608. Its totient is φ = 898884000.

The previous prime is 1980385259. The next prime is 1980385291. The reversal of 1980385286 is 6825830891.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 48785 + ... + 79628.

It is an arithmetic number, because the mean of its divisors is an integer number (202829913).

Almost surely, 2^1980385286 is an apocalyptic number.

1980385286 is a deficient number, since it is larger than the sum of its proper divisors (1264893322).

1980385286 is a wasteful number, since it uses less digits than its factorization.

1980385286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129127.

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 1980385286 is about 44501.5200414548. The cubic root of 1980385286 is about 1255.7886792534.

The spelling of 1980385286 in words is "one billion, nine hundred eighty million, three hundred eighty-five thousand, two hundred eighty-six".