1166507879 has 4 divisors (see below), whose sum is σ = 1169446584. Its totient is φ = 1163569176.

The previous prime is 1166507791. The next prime is 1166507893. The reversal of 1166507879 is 9787056611.

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 1166507879 - 2⁸ = 1166507623 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 (1166507179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1468757 + ... + 1469550.

It is an arithmetic number, because the mean of its divisors is an integer number (292361646).

Almost surely, 2^1166507879 is an apocalyptic number.

1166507879 is a deficient number, since it is larger than the sum of its proper divisors (2938705).

1166507879 is an equidigital number, since it uses as much as digits as its factorization.

1166507879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938704.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 1166507879 is about 34154.1780606707. The cubic root of 1166507879 is about 1052.6788374424.

The spelling of 1166507879 in words is "one billion, one hundred sixty-six million, five hundred seven thousand, eight hundred seventy-nine".