1165223267 has 16 divisors (see below), whose sum is σ = 1275795360. Its totient is φ = 1057784832.

The previous prime is 1165223249. The next prime is 1165223287. The reversal of 1165223267 is 7623225611.

It is not a de Polignac number, because 1165223267 - 2¹² = 1165219171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165223237) 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 15 ways as a sum of consecutive naturals, for example, 202709 + ... + 208377.

It is an arithmetic number, because the mean of its divisors is an integer number (79737210).

Almost surely, 2^1165223267 is an apocalyptic number.

1165223267 is a deficient number, since it is larger than the sum of its proper divisors (110572093).

1165223267 is a wasteful number, since it uses less digits than its factorization.

1165223267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942.

The product of its digits is 30240, while the sum is 35.

The square root of 1165223267 is about 34135.3668062905. The cubic root of 1165223267 is about 1052.2922760957.

Adding to 1165223267 its reverse (7623225611), we get a palindrome (8788448878).

The spelling of 1165223267 in words is "one billion, one hundred sixty-five million, two hundred twenty-three thousand, two hundred sixty-seven".