1158724849 has 16 divisors (see below), whose sum is σ = 1198765008. Its totient is φ = 1119485952.

The previous prime is 1158724813. The next prime is 1158724859. The reversal of 1158724849 is 9484278511.

It can be written as a sum of positive squares in 8 ways, for example, as 377913600 + 780811249 = 19440^2 + 27943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158724849 - 2¹¹ = 1158722801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158724859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320799 + ... + 1321675.

It is an arithmetic number, because the mean of its divisors is an integer number (74922813).

Almost surely, 2^1158724849 is an apocalyptic number.

It is an amenable number.

1158724849 is a deficient number, since it is larger than the sum of its proper divisors (40040159).

1158724849 is an equidigital number, since it uses as much as digits as its factorization.

1158724849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284.

The product of its digits is 645120, while the sum is 49.

The square root of 1158724849 is about 34040.0477232333. The cubic root of 1158724849 is about 1050.3324265653.

The spelling of 1158724849 in words is "one billion, one hundred fifty-eight million, seven hundred twenty-four thousand, eight hundred forty-nine".