1153085263 has 8 divisors (see below), whose sum is σ = 1284675840. Its totient is φ = 1025955480.

The previous prime is 1153085237. The next prime is 1153085267. The reversal of 1153085263 is 3625803511.

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

It is a de Polignac number, because none of the positive numbers 2^k-1153085263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153085267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114653 + ... + 1115686.

It is an arithmetic number, because the mean of its divisors is an integer number (160584480).

Almost surely, 2^1153085263 is an apocalyptic number.

1153085263 is a deficient number, since it is larger than the sum of its proper divisors (131590577).

1153085263 is a wasteful number, since it uses less digits than its factorization.

1153085263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230397.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1153085263 is about 33957.1091673010. The cubic root of 1153085263 is about 1048.6256434466.

Adding to 1153085263 its reverse (3625803511), we get a palindrome (4778888774).

The spelling of 1153085263 in words is "one billion, one hundred fifty-three million, eighty-five thousand, two hundred sixty-three".