1191680568 has 96 divisors (see below), whose sum is σ = 3484157040. Its totient is φ = 365783040.

The previous prime is 1191680549. The next prime is 1191680591. The reversal of 1191680568 is 8650861911.

1191680568 is a `hidden beast` number, since 1 + 1 + 9 + 1 + 6 + 80 + 568 = 666.

It is a super-2 number, since 2×1191680568² = 2840205152297605248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 458280 + ... + 460872.

Almost surely, 2^1191680568 is an apocalyptic number.

1191680568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1191680568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742078520).

1191680568 is an abundant number, since it is smaller than the sum of its proper divisors (2292476472).

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

1191680568 is a wasteful number, since it uses less digits than its factorization.

1191680568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109 (or 3102 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1191680568 is about 34520.7266435688. The cubic root of 1191680568 is about 1060.1971177264.

The spelling of 1191680568 in words is "one billion, one hundred ninety-one million, six hundred eighty thousand, five hundred sixty-eight".