1173118949 has 4 divisors (see below), whose sum is σ = 1242125964. Its totient is φ = 1104111936.

The previous prime is 1173118927. The next prime is 1173118963. The reversal of 1173118949 is 9498113711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9498113711 = 92003 ⋅103237.

It can be written as a sum of positive squares in 2 ways, for example, as 420988324 + 752130625 = 20518^2 + 27425^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173118949 - 2⁸ = 1173118693 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 (1173118049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34503482 + ... + 34503515.

It is an arithmetic number, because the mean of its divisors is an integer number (310531491).

Almost surely, 2^1173118949 is an apocalyptic number.

It is an amenable number.

1173118949 is a deficient number, since it is larger than the sum of its proper divisors (69007015).

1173118949 is an equidigital number, since it uses as much as digits as its factorization.

1173118949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69007014.

The product of its digits is 54432, while the sum is 44.

The square root of 1173118949 is about 34250.8240630791. The cubic root of 1173118949 is about 1054.6637440541.

The spelling of 1173118949 in words is "one billion, one hundred seventy-three million, one hundred eighteen thousand, nine hundred forty-nine".