1158915216 has 40 divisors (see below), whose sum is σ = 2995120800. Its totient is φ = 386142976.

The previous prime is 1158915209. The next prime is 1158915217. The reversal of 1158915216 is 6125198511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1158915217) 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 7 ways as a sum of consecutive naturals, for example, 180835 + ... + 187133.

It is an arithmetic number, because the mean of its divisors is an integer number (74878020).

Almost surely, 2^1158915216 is an apocalyptic number.

1158915216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1158915216 is an abundant number, since it is smaller than the sum of its proper divisors (1836205584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1158915216 is a wasteful number, since it uses less digits than its factorization.

1158915216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143 (or 10137 counting only the distinct ones).

The product of its digits is 21600, while the sum is 39.

The square root of 1158915216 is about 34042.8438295040. The cubic root of 1158915216 is about 1050.3899431490.

The spelling of 1158915216 in words is "one billion, one hundred fifty-eight million, nine hundred fifteen thousand, two hundred sixteen".