1158988320 has 288 divisors, whose sum is σ = 4667120640. Its totient is φ = 256296960.

The previous prime is 1158988307. The next prime is 1158988321. The reversal of 1158988320 is 238898511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158988321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 310626 + ... + 314334.

It is an arithmetic number, because the mean of its divisors is an integer number (16205280).

Almost surely, 2^1158988320 is an apocalyptic number.

1158988320 is a gapful number since it is divisible by the number (10) 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 1158988320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2333560320).

1158988320 is an abundant number, since it is smaller than the sum of its proper divisors (3508132320).

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

1158988320 is a wasteful number, since it uses less digits than its factorization.

1158988320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768 (or 3757 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 1158988320 is about 34043.9175184055. The cubic root of 1158988320 is about 1050.4120287715.

The spelling of 1158988320 in words is "one billion, one hundred fifty-eight million, nine hundred eighty-eight thousand, three hundred twenty".