1166193873 has 24 divisors (see below), whose sum is σ = 1858332840. Its totient is φ = 700151040.

The previous prime is 1166193869. The next prime is 1166193877. The reversal of 1166193873 is 3783916611.

It is an interprime number because it is at equal distance from previous prime (1166193869) and next prime (1166193877).

It can be written as a sum of positive squares in 4 ways, for example, as 63489024 + 1102704849 = 7968^2 + 33207^2 .

It is not a de Polignac number, because 1166193873 - 2² = 1166193869 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166193877) 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 23 ways as a sum of consecutive naturals, for example, 116758 + ... + 126351.

It is an arithmetic number, because the mean of its divisors is an integer number (77430535).

Almost surely, 2^1166193873 is an apocalyptic number.

1166193873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1166193873 is a deficient number, since it is larger than the sum of its proper divisors (692138967).

1166193873 is a wasteful number, since it uses less digits than its factorization.

1166193873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243169 (or 243166 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 1166193873 is about 34149.5808612639. The cubic root of 1166193873 is about 1052.5843739756.

The spelling of 1166193873 in words is "one billion, one hundred sixty-six million, one hundred ninety-three thousand, eight hundred seventy-three".