1200889108 has 12 divisors (see below), whose sum is σ = 2115474592. Its totient is φ = 596467800.

The previous prime is 1200889103. The next prime is 1200889111. The reversal of 1200889108 is 8019880021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200889103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993510 + ... + 994717.

Almost surely, 2^1200889108 is an apocalyptic number.

It is an amenable number.

1200889108 is a deficient number, since it is larger than the sum of its proper divisors (914585484).

1200889108 is a wasteful number, since it uses less digits than its factorization.

1200889108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988382 (or 1988380 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1200889108 is about 34653.8469437377. The cubic root of 1200889108 is about 1062.9209539007.

The spelling of 1200889108 in words is "one billion, two hundred million, eight hundred eighty-nine thousand, one hundred eight".