1158428549 has 2 divisors, whose sum is σ = 1158428550. Its totient is φ = 1158428548.

The previous prime is 1158428497. The next prime is 1158428591. The reversal of 1158428549 is 9458248511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675220225 + 483208324 = 25985^2 + 21982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1158428549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158428149) 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 as a sum of consecutive naturals, namely, 579214274 + 579214275.

It is an arithmetic number, because the mean of its divisors is an integer number (579214275).

Almost surely, 2^1158428549 is an apocalyptic number.

It is an amenable number.

1158428549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158428549 is an equidigital number, since it uses as much as digits as its factorization.

1158428549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 47.

The square root of 1158428549 is about 34035.6952184027. The cubic root of 1158428549 is about 1050.2428913523.

The spelling of 1158428549 in words is "one billion, one hundred fifty-eight million, four hundred twenty-eight thousand, five hundred forty-nine".