1163235013 has 4 divisors (see below), whose sum is σ = 1231660620. Its totient is φ = 1094809408.

The previous prime is 1163235001. The next prime is 1163235023. The reversal of 1163235013 is 3105323611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3105323611 = 13 ⋅238871047.

It can be written as a sum of positive squares in 2 ways, for example, as 993636484 + 169598529 = 31522^2 + 13023^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163235013 - 2¹³ = 1163226821 is a prime.

It is a super-2 number, since 2×1163235013² = 2706231390938220338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163235023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34212778 + ... + 34212811.

It is an arithmetic number, because the mean of its divisors is an integer number (307915155).

Almost surely, 2^1163235013 is an apocalyptic number.

It is an amenable number.

1163235013 is a deficient number, since it is larger than the sum of its proper divisors (68425607).

1163235013 is an equidigital number, since it uses as much as digits as its factorization.

1163235013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68425606.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1163235013 is about 34106.2312928298. The cubic root of 1163235013 is about 1051.6934164828.

Adding to 1163235013 its reverse (3105323611), we get a palindrome (4268558624).

The spelling of 1163235013 in words is "one billion, one hundred sixty-three million, two hundred thirty-five thousand, thirteen".