1133146447 has 4 divisors (see below), whose sum is σ = 1133424360. Its totient is φ = 1132868536.

The previous prime is 1133146409. The next prime is 1133146459. The reversal of 1133146447 is 7446413311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1133146447 - 2²⁷ = 998928719 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 (1133146477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132748 + ... + 141025.

It is an arithmetic number, because the mean of its divisors is an integer number (283356090).

Almost surely, 2^1133146447 is an apocalyptic number.

1133146447 is a deficient number, since it is larger than the sum of its proper divisors (277913).

1133146447 is an equidigital number, since it uses as much as digits as its factorization.

1133146447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277912.

The product of its digits is 24192, while the sum is 34.

The square root of 1133146447 is about 33662.2406711140. The cubic root of 1133146447 is about 1042.5462899661.

Adding to 1133146447 its reverse (7446413311), we get a palindrome (8579559758).

The spelling of 1133146447 in words is "one billion, one hundred thirty-three million, one hundred forty-six thousand, four hundred forty-seven".