1166331659 has 4 divisors (see below), whose sum is σ = 1166414880. Its totient is φ = 1166248440.

The previous prime is 1166331653. The next prime is 1166331671. The reversal of 1166331659 is 9561336611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9561336611 = 37 ⋅258414503.

It is a cyclic number.

It is not a de Polignac number, because 1166331659 - 2⁴ = 1166331643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166331653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14852 + ... + 50529.

It is an arithmetic number, because the mean of its divisors is an integer number (291603720).

Almost surely, 2^1166331659 is an apocalyptic number.

1166331659 is a deficient number, since it is larger than the sum of its proper divisors (83221).

1166331659 is an equidigital number, since it uses as much as digits as its factorization.

1166331659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83220.

The product of its digits is 87480, while the sum is 41.

The square root of 1166331659 is about 34151.5981910071. The cubic root of 1166331659 is about 1052.6258266826.

The spelling of 1166331659 in words is "one billion, one hundred sixty-six million, three hundred thirty-one thousand, six hundred fifty-nine".