1147168921 has 16 divisors (see below), whose sum is σ = 1217462400. Its totient is φ = 1079059968.

The previous prime is 1147168901. The next prime is 1147168927. The reversal of 1147168921 is 1298617411.

It is a cyclic number.

It is not a de Polignac number, because 1147168921 - 2¹⁷ = 1147037849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147168927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606345 + ... + 608233.

It is an arithmetic number, because the mean of its divisors is an integer number (76091400).

Almost surely, 2^1147168921 is an apocalyptic number.

It is an amenable number.

1147168921 is a deficient number, since it is larger than the sum of its proper divisors (70293479).

1147168921 is a wasteful number, since it uses less digits than its factorization.

1147168921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448.

The product of its digits is 24192, while the sum is 40.

The square root of 1147168921 is about 33869.8822111917. The cubic root of 1147168921 is about 1046.8291099225.

The spelling of 1147168921 in words is "one billion, one hundred forty-seven million, one hundred sixty-eight thousand, nine hundred twenty-one".