1191659 has 16 divisors (see below), whose sum is σ = 1444608. Its totient is φ = 961632.

The previous prime is 1191643. The next prime is 1191667. The reversal of 1191659 is 9561911.

It is a happy number.

It is not a de Polignac number, because 1191659 - 2⁴ = 1191643 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11084 + ... + 11190.

It is an arithmetic number, because the mean of its divisors is an integer number (90288).

2^1191659 is an apocalyptic number.

1191659 is a deficient number, since it is larger than the sum of its proper divisors (252949).

1191659 is a wasteful number, since it uses less digits than its factorization.

1191659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194.

The product of its digits is 2430, while the sum is 32.

The square root of 1191659 is about 1091.6313480292. The cubic root of 1191659 is about 106.0190721586.

The spelling of 1191659 in words is "one million, one hundred ninety-one thousand, six hundred fifty-nine".