1166163583 has 4 divisors (see below), whose sum is σ = 1255868488. Its totient is φ = 1076458680.

The previous prime is 1166163547. The next prime is 1166163601. The reversal of 1166163583 is 3853616611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3853616611 = 13 ⋅296432047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166163583 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 (1166163083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44852433 + ... + 44852458.

It is an arithmetic number, because the mean of its divisors is an integer number (313967122).

Almost surely, 2^1166163583 is an apocalyptic number.

1166163583 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1166163583 is a deficient number, since it is larger than the sum of its proper divisors (89704905).

1166163583 is an equidigital number, since it uses as much as digits as its factorization.

1166163583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89704904.

The product of its digits is 77760, while the sum is 40.

The square root of 1166163583 is about 34149.1373683143. The cubic root of 1166163583 is about 1052.5752608377.

The spelling of 1166163583 in words is "one billion, one hundred sixty-six million, one hundred sixty-three thousand, five hundred eighty-three".