1153205011 has 16 divisors (see below), whose sum is σ = 1355379136. Its totient is φ = 960460416.

The previous prime is 1153204963. The next prime is 1153205033. The reversal of 1153205011 is 1105023511.

It is a cyclic number.

It is not a de Polignac number, because 1153205011 - 2²⁵ = 1119650579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153205011.

It is not an unprimeable number, because it can be changed into a prime (1153208011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224605 + ... + 229681.

It is an arithmetic number, because the mean of its divisors is an integer number (84711196).

Almost surely, 2^1153205011 is an apocalyptic number.

1153205011 is a deficient number, since it is larger than the sum of its proper divisors (202174125).

1153205011 is an equidigital number, since it uses as much as digits as its factorization.

1153205011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1153205011 is about 33958.8723458244. The cubic root of 1153205011 is about 1048.6619421434.

Adding to 1153205011 its reverse (1105023511), we get a palindrome (2258228522).

The spelling of 1153205011 in words is "one billion, one hundred fifty-three million, two hundred five thousand, eleven".