1191063 has 8 divisors (see below), whose sum is σ = 1604848. Its totient is φ = 785664.

The previous prime is 1191061. The next prime is 1191077. The reversal of 1191063 is 3601911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1191063 - 2¹ = 1191061 is a prime.

It is a Duffinian number.

1191063 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (200606).

2^1191063 is an apocalyptic number.

1191063 is a deficient number, since it is larger than the sum of its proper divisors (413785).

1191063 is an equidigital number, since it uses as much as digits as its factorization.

1191063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1191063 is about 1091.3583279565. The cubic root of 1191063 is about 106.0013943094.

Adding to 1191063 its reverse (3601911), we get a palindrome (4792974).

The spelling of 1191063 in words is "one million, one hundred ninety-one thousand, sixty-three".