1158122849 has 16 divisors (see below), whose sum is σ = 1257449424. Its totient is φ = 1060300800.

The previous prime is 1158122843. The next prime is 1158122891. The reversal of 1158122849 is 9482218511.

It can be written as a sum of positive squares in 8 ways, for example, as 32855824 + 1125267025 = 5732^2 + 33545^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1158122849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158122843) 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 15 ways as a sum of consecutive naturals, for example, 980039 + ... + 981219.

It is an arithmetic number, because the mean of its divisors is an integer number (78590589).

Almost surely, 2^1158122849 is an apocalyptic number.

It is an amenable number.

1158122849 is a deficient number, since it is larger than the sum of its proper divisors (99326575).

1158122849 is a wasteful number, since it uses less digits than its factorization.

1158122849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

The product of its digits is 46080, while the sum is 41.

The square root of 1158122849 is about 34031.2040486375. The cubic root of 1158122849 is about 1050.1504996670.

The spelling of 1158122849 in words is "one billion, one hundred fifty-eight million, one hundred twenty-two thousand, eight hundred forty-nine".