1191968 has 18 divisors (see below), whose sum is σ = 2358909. Its totient is φ = 592896.

The previous prime is 1191947. The next prime is 1191973. The reversal of 1191968 is 8691911.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1106704 + 85264 = 1052^2 + 292^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=772.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6080 + ... + 6272.

2^1191968 is an apocalyptic number.

It is an amenable number.

1191968 is a deficient number, since it is larger than the sum of its proper divisors (1166941).

1191968 is an frugal number, since it uses more digits than its factorization.

1191968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 195 counting only the distinct ones).

The product of its digits is 3888, while the sum is 35.

The square root of 1191968 is about 1091.7728701520. The cubic root of 1191968 is about 106.0282350321.

The spelling of 1191968 in words is "one million, one hundred ninety-one thousand, nine hundred sixty-eight".