1158239233 has 4 divisors (see below), whose sum is σ = 1159992148. Its totient is φ = 1156486320.

The previous prime is 1158239197. The next prime is 1158239261. The reversal of 1158239233 is 3329328511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1037612944 + 120626289 = 32212^2 + 10983^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158239233 - 2⁹ = 1158238721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1158239192 and 1158239201.

It is not an unprimeable number, because it can be changed into a prime (1158239273) 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, 875466 + ... + 876787.

It is an arithmetic number, because the mean of its divisors is an integer number (289998037).

Almost surely, 2^1158239233 is an apocalyptic number.

It is an amenable number.

1158239233 is a deficient number, since it is larger than the sum of its proper divisors (1752915).

1158239233 is an equidigital number, since it uses as much as digits as its factorization.

1158239233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752914.

The product of its digits is 38880, while the sum is 37.

The square root of 1158239233 is about 34032.9139657479. The cubic root of 1158239233 is about 1050.1856763100.

The spelling of 1158239233 in words is "one billion, one hundred fifty-eight million, two hundred thirty-nine thousand, two hundred thirty-three".