1153220135 has 4 divisors (see below), whose sum is σ = 1383864168. Its totient is φ = 922576104.

The previous prime is 1153220111. The next prime is 1153220137. The reversal of 1153220135 is 5310223511.

It is a happy number.

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 1153220135 - 2¹⁸ = 1152957991 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 1153220135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153220137) 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 3 ways as a sum of consecutive naturals, for example, 115322009 + ... + 115322018.

It is an arithmetic number, because the mean of its divisors is an integer number (345966042).

Almost surely, 2^1153220135 is an apocalyptic number.

1153220135 is a deficient number, since it is larger than the sum of its proper divisors (230644033).

1153220135 is an equidigital number, since it uses as much as digits as its factorization.

1153220135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230644032.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1153220135 is about 33959.0950262224. The cubic root of 1153220135 is about 1048.6665264378. Note that the first 3 decimals are identical.

Adding to 1153220135 its reverse (5310223511), we get a palindrome (6463443646).

The spelling of 1153220135 in words is "one billion, one hundred fifty-three million, two hundred twenty thousand, one hundred thirty-five".