1158909552 has 80 divisors (see below), whose sum is σ = 3359561760. Its totient is φ = 382464000.

The previous prime is 1158909491. The next prime is 1158909569. The reversal of 1158909552 is 2559098511.

1158909552 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 90 + 9 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1158909498 and 1158909507.

It is a congruent number.

It is an unprimeable number.

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, 30352 + ... + 56912.

It is an arithmetic number, because the mean of its divisors is an integer number (41994522).

Almost surely, 2^1158909552 is an apocalyptic number.

1158909552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158909552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679780880).

1158909552 is an abundant number, since it is smaller than the sum of its proper divisors (2200652208).

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

1158909552 is a wasteful number, since it uses less digits than its factorization.

1158909552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26679 (or 26667 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 45.

The square root of 1158909552 is about 34042.7606401126. The cubic root of 1158909552 is about 1050.3882319458.

The spelling of 1158909552 in words is "one billion, one hundred fifty-eight million, nine hundred nine thousand, five hundred fifty-two".