1191982568 has 32 divisors (see below), whose sum is σ = 2578132800. Its totient is φ = 506072832.

The previous prime is 1191982553. The next prime is 1191982619. The reversal of 1191982568 is 8652891911.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93473 + ... + 105456.

It is an arithmetic number, because the mean of its divisors is an integer number (80566650).

Almost surely, 2^1191982568 is an apocalyptic number.

It is an amenable number.

1191982568 is an abundant number, since it is smaller than the sum of its proper divisors (1386150232).

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

1191982568 is a wasteful number, since it uses less digits than its factorization.

1191982568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199049 (or 199045 counting only the distinct ones).

The product of its digits is 311040, while the sum is 50.

The square root of 1191982568 is about 34525.1005501794. The cubic root of 1191982568 is about 1060.2866698248.

The spelling of 1191982568 in words is "one billion, one hundred ninety-one million, nine hundred eighty-two thousand, five hundred sixty-eight".