1153215443 has 8 divisors (see below), whose sum is σ = 1166133360. Its totient is φ = 1140318720.

The previous prime is 1153215433. The next prime is 1153215461. The reversal of 1153215443 is 3445123511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1153215443 - 2⁶ = 1153215379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153215403) 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 7 ways as a sum of consecutive naturals, for example, 120623 + ... + 129831.

It is an arithmetic number, because the mean of its divisors is an integer number (145766670).

Almost surely, 2^1153215443 is an apocalyptic number.

1153215443 is a deficient number, since it is larger than the sum of its proper divisors (12917917).

1153215443 is an equidigital number, since it uses as much as digits as its factorization.

1153215443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10597.

The product of its digits is 7200, while the sum is 29.

The square root of 1153215443 is about 33959.0259430391. The cubic root of 1153215443 is about 1048.6651042318.

Adding to 1153215443 its reverse (3445123511), we get a palindrome (4598338954).

The spelling of 1153215443 in words is "one billion, one hundred fifty-three million, two hundred fifteen thousand, four hundred forty-three".