1150821000 has 256 divisors, whose sum is σ = 4560192000. Its totient is φ = 263001600.

The previous prime is 1150820999. The next prime is 1150821017. The reversal of 1150821000 is 1280511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 185956 + ... + 192044.

It is an arithmetic number, because the mean of its divisors is an integer number (17813250).

Almost surely, 2^1150821000 is an apocalyptic number.

1150821000 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 1150821000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2280096000).

1150821000 is an abundant number, since it is smaller than the sum of its proper divisors (3409371000).

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

1150821000 is a wasteful number, since it uses less digits than its factorization.

1150821000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126 (or 6106 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1150821000 is about 33923.7527405209. The cubic root of 1150821000 is about 1047.9388136101.

The spelling of 1150821000 in words is "one billion, one hundred fifty million, eight hundred twenty-one thousand".