1166943379 has 6 divisors (see below), whose sum is σ = 1357464804. Its totient is φ = 1000237140.

The previous prime is 1166943343. The next prime is 1166943389. The reversal of 1166943379 is 9733496611.

It is a happy number.

It is not a de Polignac number, because 1166943379 - 2¹⁷ = 1166812307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 23815171 = 1166943379 / (1 + 1 + 6 + 6 + 9 + 4 + 3 + 3 + 7 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166943389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11907537 + ... + 11907634.

It is an arithmetic number, because the mean of its divisors is an integer number (226244134).

Almost surely, 2^1166943379 is an apocalyptic number.

1166943379 is a deficient number, since it is larger than the sum of its proper divisors (190521425).

1166943379 is an equidigital number, since it uses as much as digits as its factorization.

1166943379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23815185 (or 23815178 counting only the distinct ones).

The product of its digits is 734832, while the sum is 49.

The square root of 1166943379 is about 34160.5529668359. The cubic root of 1166943379 is about 1052.8098222969.

The spelling of 1166943379 in words is "one billion, one hundred sixty-six million, nine hundred forty-three thousand, three hundred seventy-nine".