1000199968 has 12 divisors (see below), whose sum is σ = 1969143750. Its totient is φ = 500099968.

The previous prime is 1000199939. The next prime is 1000199987. The reversal of 1000199968 is 8699910001.

It can be written as a sum of positive squares in only one way, i.e., 703947024 + 296252944 = 26532^2 + 17212^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15628093 + ... + 15628156.

Almost surely, 2^1000199968 is an apocalyptic number.

It is an amenable number.

1000199968 is a deficient number, since it is larger than the sum of its proper divisors (968943782).

1000199968 is an equidigital number, since it uses as much as digits as its factorization.

1000199968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31256259 (or 31256251 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 1000199968 is about 31625.9382153320. The cubic root of 1000199968 is about 1000.0666515575.

The spelling of 1000199968 in words is "one billion, one hundred ninety-nine thousand, nine hundred sixty-eight".