1188343 has 4 divisors (see below), whose sum is σ = 1279768. Its totient is φ = 1096920.

The previous prime is 1188307. The next prime is 1188353. The reversal of 1188343 is 3438811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1188343 - 2¹⁷ = 1057271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45693 + ... + 45718.

It is an arithmetic number, because the mean of its divisors is an integer number (319942).

2^1188343 is an apocalyptic number.

1188343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1188343 is a deficient number, since it is larger than the sum of its proper divisors (91425).

1188343 is an equidigital number, since it uses as much as digits as its factorization.

1188343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91424.

The product of its digits is 2304, while the sum is 28.

The square root of 1188343 is about 1090.1114621909. Note that the first 3 decimals coincide. The cubic root of 1188343 is about 105.9206419197.

The spelling of 1188343 in words is "one million, one hundred eighty-eight thousand, three hundred forty-three".