1158245089 has 3 divisors (see below), whose sum is σ = 1158279123. Its totient is φ = 1158211056.

The previous prime is 1158244993. The next prime is 1158245113. The reversal of 1158245089 is 9805428511.

The square root of 1158245089 is 34033.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9805428511 = 24373 ⋅402307.

It can be written as a sum of positive squares in only one way, i.e., 819390625 + 338854464 = 28625^2 + 18408^2 .

It is not a de Polignac number, because 1158245089 - 2¹³ = 1158236897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158240089) 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 2 ways as a sum of consecutive naturals, for example, 17017 + ... + 51049.

It is an arithmetic number, because the mean of its divisors is an integer number (386093041).

Almost surely, 2^1158245089 is an apocalyptic number.

1158245089 is the 34033-rd square number.

1158245089 is the 17017-th centered octagonal number.

It is an amenable number.

1158245089 is a deficient number, since it is larger than the sum of its proper divisors (34034).

1158245089 is an frugal number, since it uses more digits than its factorization.

1158245089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68066 (or 34033 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The cubic root of 1158245089 is about 1050.1874462025.

The spelling of 1158245089 in words is "one billion, one hundred fifty-eight million, two hundred forty-five thousand, eighty-nine".