1171147144 has 8 divisors (see below), whose sum is σ = 2195900910. Its totient is φ = 585573568.

The previous prime is 1171147127. The next prime is 1171147147. The reversal of 1171147144 is 4417411711.

It can be written as a sum of positive squares in only one way, i.e., 1130976900 + 40170244 = 33630^2 + 6338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1171147147) 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 as a sum of consecutive naturals, namely, 73196689 + ... + 73196704.

Almost surely, 2^1171147144 is an apocalyptic number.

It is an amenable number.

1171147144 is a deficient number, since it is larger than the sum of its proper divisors (1024753766).

1171147144 is a wasteful number, since it uses less digits than its factorization.

1171147144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146393399 (or 146393395 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

The square root of 1171147144 is about 34222.0271754903. The cubic root of 1171147144 is about 1054.0725117453.

Adding to 1171147144 its reverse (4417411711), we get a palindrome (5588558855).

The spelling of 1171147144 in words is "one billion, one hundred seventy-one million, one hundred forty-seven thousand, one hundred forty-four".