1153532203 has 4 divisors (see below), whose sum is σ = 1169334088. Its totient is φ = 1137730320.

The previous prime is 1153532201. The next prime is 1153532209. The reversal of 1153532203 is 3022353511.

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 1153532203 - 2¹ = 1153532201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153532201) 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 3 ways as a sum of consecutive naturals, for example, 7900833 + ... + 7900978.

It is an arithmetic number, because the mean of its divisors is an integer number (292333522).

Almost surely, 2^1153532203 is an apocalyptic number.

1153532203 is a deficient number, since it is larger than the sum of its proper divisors (15801885).

1153532203 is an equidigital number, since it uses as much as digits as its factorization.

1153532203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15801884.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1153532203 is about 33963.6894786182. The cubic root of 1153532203 is about 1048.7611096375.

Adding to 1153532203 its reverse (3022353511), we get a palindrome (4175885714).

The spelling of 1153532203 in words is "one billion, one hundred fifty-three million, five hundred thirty-two thousand, two hundred three".