1166406243 has 8 divisors (see below), whose sum is σ = 1556844048. Its totient is φ = 776786304.

The previous prime is 1166406239. The next prime is 1166406259. The reversal of 1166406243 is 3426046611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166406243 - 2² = 1166406239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166406203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201130 + ... + 206847.

It is an arithmetic number, because the mean of its divisors is an integer number (194605506).

Almost surely, 2^1166406243 is an apocalyptic number.

1166406243 is a deficient number, since it is larger than the sum of its proper divisors (390437805).

1166406243 is an equidigital number, since it uses as much as digits as its factorization.

1166406243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408933.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1166406243 is about 34152.6901283047. The cubic root of 1166406243 is about 1052.6482638029.

The spelling of 1166406243 in words is "one billion, one hundred sixty-six million, four hundred six thousand, two hundred forty-three".