1171142673 has 4 divisors (see below), whose sum is σ = 1561523568. Its totient is φ = 780761780.

The previous prime is 1171142671. The next prime is 1171142677. The reversal of 1171142673 is 3762411711.

It is a happy number.

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 1171142673 - 2¹ = 1171142671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1171142671) 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 3 ways as a sum of consecutive naturals, for example, 195190443 + ... + 195190448.

It is an arithmetic number, because the mean of its divisors is an integer number (390380892).

Almost surely, 2^1171142673 is an apocalyptic number.

It is an amenable number.

1171142673 is a deficient number, since it is larger than the sum of its proper divisors (390380895).

1171142673 is an equidigital number, since it uses as much as digits as its factorization.

1171142673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390380894.

The product of its digits is 7056, while the sum is 33.

The square root of 1171142673 is about 34221.9618520038. The cubic root of 1171142673 is about 1054.0711703925.

The spelling of 1171142673 in words is "one billion, one hundred seventy-one million, one hundred forty-two thousand, six hundred seventy-three".