1158434449 has 2 divisors, whose sum is σ = 1158434450. Its totient is φ = 1158434448.

The previous prime is 1158434447. The next prime is 1158434477. The reversal of 1158434449 is 9444348511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814702849 + 343731600 = 28543^2 + 18540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158434449 - 2¹ = 1158434447 is a prime.

Together with 1158434447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1158434447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579217224 + 579217225.

It is an arithmetic number, because the mean of its divisors is an integer number (579217225).

Almost surely, 2^1158434449 is an apocalyptic number.

It is an amenable number.

1158434449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158434449 is an equidigital number, since it uses as much as digits as its factorization.

1158434449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 1158434449 is about 34035.7818920030. The cubic root of 1158434449 is about 1050.2446743489.

The spelling of 1158434449 in words is "one billion, one hundred fifty-eight million, four hundred thirty-four thousand, four hundred forty-nine".