1166418249 has 4 divisors (see below), whose sum is σ = 1555224336. Its totient is φ = 777612164.

The previous prime is 1166418199. The next prime is 1166418257. The reversal of 1166418249 is 9428146611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1166418249 - 2⁹ = 1166417737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1166418249.

It is not an unprimeable number, because it can be changed into a prime (1166418289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194403039 + ... + 194403044.

It is an arithmetic number, because the mean of its divisors is an integer number (388806084).

Almost surely, 2^1166418249 is an apocalyptic number.

It is an amenable number.

1166418249 is a deficient number, since it is larger than the sum of its proper divisors (388806087).

1166418249 is an equidigital number, since it uses as much as digits as its factorization.

1166418249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388806086.

The product of its digits is 82944, while the sum is 42.

The square root of 1166418249 is about 34152.8658973153. The cubic root of 1166418249 is about 1052.6518754811.

The spelling of 1166418249 in words is "one billion, one hundred sixty-six million, four hundred eighteen thousand, two hundred forty-nine".