1158229521 has 24 divisors (see below), whose sum is σ = 1732985280. Its totient is φ = 744537696.

The previous prime is 1158229517. The next prime is 1158229577. The reversal of 1158229521 is 1259228511.

1158229521 is a `hidden beast` number, since 1 + 1 + 582 + 29 + 52 + 1 = 666.

It is not a de Polignac number, because 1158229521 - 2² = 1158229517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1158229421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229006 + ... + 234008.

It is an arithmetic number, because the mean of its divisors is an integer number (72207720).

Almost surely, 2^1158229521 is an apocalyptic number.

It is an amenable number.

1158229521 is a deficient number, since it is larger than the sum of its proper divisors (574755759).

1158229521 is a wasteful number, since it uses less digits than its factorization.

1158229521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925 (or 5922 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 1158229521 is about 34032.7712800471. The cubic root of 1158229521 is about 1050.1827409832.

The spelling of 1158229521 in words is "one billion, one hundred fifty-eight million, two hundred twenty-nine thousand, five hundred twenty-one".