1166320057 has 8 divisors (see below), whose sum is σ = 1378900800. Its totient is φ = 965230224.

The previous prime is 1166320039. The next prime is 1166320063. The reversal of 1166320057 is 7500236611.

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

It is not a de Polignac number, because 1166320057 - 2¹⁹ = 1165795769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166320007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872507 + ... + 2872912.

It is an arithmetic number, because the mean of its divisors is an integer number (172362600).

Almost surely, 2^1166320057 is an apocalyptic number.

It is an amenable number.

1166320057 is a deficient number, since it is larger than the sum of its proper divisors (212580743).

1166320057 is an equidigital number, since it uses as much as digits as its factorization.

1166320057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745455.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1166320057 is about 34151.4283303056. The cubic root of 1166320057 is about 1052.6223363646.

Adding to 1166320057 its reverse (7500236611), we get a palindrome (8666556668).

The spelling of 1166320057 in words is "one billion, one hundred sixty-six million, three hundred twenty thousand, fifty-seven".