1200549668 has 6 divisors (see below), whose sum is σ = 2100961926. Its totient is φ = 600274832.

The previous prime is 1200549661. The next prime is 1200549671. The reversal of 1200549668 is 8669450021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 674856484 + 525693184 = 25978^2 + 22928^2 .

It is not an unprimeable number, because it can be changed into a prime (1200549661) by changing a digit.

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, 150068705 + ... + 150068712.

It is an arithmetic number, because the mean of its divisors is an integer number (350160321).

Almost surely, 2^1200549668 is an apocalyptic number.

It is an amenable number.

1200549668 is a deficient number, since it is larger than the sum of its proper divisors (900412258).

1200549668 is a wasteful number, since it uses less digits than its factorization.

1200549668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300137421 (or 300137419 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1200549668 is about 34648.9490172501. The cubic root of 1200549668 is about 1062.8207970293.

Adding to 1200549668 its reverse (8669450021), we get a palindrome (9869999689).

The spelling of 1200549668 in words is "one billion, two hundred million, five hundred forty-nine thousand, six hundred sixty-eight".