1189808912 has 20 divisors (see below), whose sum is σ = 2337725376. Its totient is φ = 586524960.

The previous prime is 1189808911. The next prime is 1189808933. The reversal of 1189808912 is 2198089811.

It is not an unprimeable number, because it can be changed into a prime (1189808911) 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, 522548 + ... + 524819.

Almost surely, 2^1189808912 is an apocalyptic number.

It is an amenable number.

1189808912 is a deficient number, since it is larger than the sum of its proper divisors (1147916464).

1189808912 is a wasteful number, since it uses less digits than its factorization.

1189808912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047446 (or 1047440 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 47.

The square root of 1189808912 is about 34493.6068279326. The cubic root of 1189808912 is about 1059.6417776130.

The spelling of 1189808912 in words is "one billion, one hundred eighty-nine million, eight hundred eight thousand, nine hundred twelve".