1158352609 has 4 divisors (see below), whose sum is σ = 1158611140. Its totient is φ = 1158094080.

The previous prime is 1158352549. The next prime is 1158352633. The reversal of 1158352609 is 9062538511.

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 786634209 + 371718400 = 28047^2 + 19280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158352609 - 2²³ = 1149964001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158352109) 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 3 ways as a sum of consecutive naturals, for example, 122424 + ... + 131545.

It is an arithmetic number, because the mean of its divisors is an integer number (289652785).

Almost surely, 2^1158352609 is an apocalyptic number.

It is an amenable number.

1158352609 is a deficient number, since it is larger than the sum of its proper divisors (258531).

1158352609 is an equidigital number, since it uses as much as digits as its factorization.

1158352609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258530.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 1158352609 is about 34034.5796066295. The cubic root of 1158352609 is about 1050.2199415300.

The spelling of 1158352609 in words is "one billion, one hundred fifty-eight million, three hundred fifty-two thousand, six hundred nine".