1166236143 has 8 divisors (see below), whose sum is σ = 1570078848. Its totient is φ = 769942104.

The previous prime is 1166236139. The next prime is 1166236147. The reversal of 1166236143 is 3416326611.

It is an interprime number because it is at equal distance from previous prime (1166236139) and next prime (1166236147).

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

It is not a de Polignac number, because 1166236143 - 2² = 1166236139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166236147) 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 7 ways as a sum of consecutive naturals, for example, 1886805 + ... + 1887422.

It is an arithmetic number, because the mean of its divisors is an integer number (196259856).

Almost surely, 2^1166236143 is an apocalyptic number.

1166236143 is a deficient number, since it is larger than the sum of its proper divisors (403842705).

1166236143 is a wasteful number, since it uses less digits than its factorization.

1166236143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774333.

The product of its digits is 15552, while the sum is 33.

The square root of 1166236143 is about 34150.1997505139. The cubic root of 1166236143 is about 1052.5970911875.

The spelling of 1166236143 in words is "one billion, one hundred sixty-six million, two hundred thirty-six thousand, one hundred forty-three".