1191868 has 6 divisors (see below), whose sum is σ = 2085776. Its totient is φ = 595932.

The previous prime is 1191847. The next prime is 1191899. The reversal of 1191868 is 8681911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148980 + ... + 148987.

2^1191868 is an apocalyptic number.

It is an amenable number.

1191868 is a deficient number, since it is larger than the sum of its proper divisors (893908).

1191868 is a wasteful number, since it uses less digits than its factorization.

1191868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297971 (or 297969 counting only the distinct ones).

The product of its digits is 3456, while the sum is 34.

The square root of 1191868 is about 1091.7270721201. The cubic root of 1191868 is about 106.0252698742.

The spelling of 1191868 in words is "one million, one hundred ninety-one thousand, eight hundred sixty-eight".