1000386980 has 12 divisors (see below), whose sum is σ = 2100812700. Its totient is φ = 400154784.

The previous prime is 1000386979. The next prime is 1000386997. The reversal of 1000386980 is 896830001.

It can be written as a sum of positive squares in 2 ways, for example, as 423618724 + 576768256 = 20582^2 + 24016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1000386980.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25009655 + ... + 25009694.

It is an arithmetic number, because the mean of its divisors is an integer number (175067725).

Almost surely, 2^1000386980 is an apocalyptic number.

1000386980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000386980 is an abundant number, since it is smaller than the sum of its proper divisors (1100425720).

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

1000386980 is a wasteful number, since it uses less digits than its factorization.

1000386980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50019358 (or 50019356 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1000386980 is about 31628.8947008902. The cubic root of 1000386980 is about 1000.1289766976.

The spelling of 1000386980 in words is "one billion, three hundred eighty-six thousand, nine hundred eighty".