1147232189 has 4 divisors (see below), whose sum is σ = 1147890624. Its totient is φ = 1146573756.

The previous prime is 1147232183. The next prime is 1147232209. The reversal of 1147232189 is 9812327411.

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 1147232189 - 2⁴ = 1147232173 is a prime.

It is a super-2 number, since 2×1147232189² = 2632283390955463442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147232183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326597 + ... + 330090.

It is an arithmetic number, because the mean of its divisors is an integer number (286972656).

Almost surely, 2^1147232189 is an apocalyptic number.

It is an amenable number.

1147232189 is a deficient number, since it is larger than the sum of its proper divisors (658435).

1147232189 is an equidigital number, since it uses as much as digits as its factorization.

1147232189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658434.

The product of its digits is 24192, while the sum is 38.

The square root of 1147232189 is about 33870.8161844382. The cubic root of 1147232189 is about 1046.8483542742.

The spelling of 1147232189 in words is "one billion, one hundred forty-seven million, two hundred thirty-two thousand, one hundred eighty-nine".