1166400241 has 4 divisors (see below), whose sum is σ = 1193525872. Its totient is φ = 1139274612.

The previous prime is 1166400233. The next prime is 1166400251. The reversal of 1166400241 is 1420046611.

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 1166400241 - 2³ = 1166400233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166400251) 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, 13562751 + ... + 13562836.

It is an arithmetic number, because the mean of its divisors is an integer number (298381468).

Almost surely, 2^1166400241 is an apocalyptic number.

It is an amenable number.

1166400241 is a deficient number, since it is larger than the sum of its proper divisors (27125631).

1166400241 is an equidigital number, since it uses as much as digits as its factorization.

1166400241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27125630.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1166400241 is about 34152.6022581003. The cubic root of 1166400241 is about 1052.6464582554.

Adding to 1166400241 its reverse (1420046611), we get a palindrome (2586446852).

The spelling of 1166400241 in words is "one billion, one hundred sixty-six million, four hundred thousand, two hundred forty-one".