1166326141 has 4 divisors (see below), whose sum is σ = 1166422492. Its totient is φ = 1166229792.

The previous prime is 1166326129. The next prime is 1166326177. The reversal of 1166326141 is 1416236611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 784280025 + 382046116 = 28005^2 + 19546^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166326141 - 2⁷ = 1166326013 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 (1166326111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26880 + ... + 55273.

It is an arithmetic number, because the mean of its divisors is an integer number (291605623).

Almost surely, 2^1166326141 is an apocalyptic number.

It is an amenable number.

1166326141 is a deficient number, since it is larger than the sum of its proper divisors (96351).

1166326141 is an equidigital number, since it uses as much as digits as its factorization.

1166326141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96350.

The product of its digits is 5184, while the sum is 31.

The square root of 1166326141 is about 34151.5174040627. The cubic root of 1166326141 is about 1052.6241666636.

The spelling of 1166326141 in words is "one billion, one hundred sixty-six million, three hundred twenty-six thousand, one hundred forty-one".