1153030500 has 144 divisors (see below), whose sum is σ = 3655242864. Its totient is φ = 305971200.

The previous prime is 1153030499. The next prime is 1153030573. The reversal of 1153030500 is 50303511.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6260004 + 1146770496 = 2502^2 + 33864^2 .

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 47 ways as a sum of consecutive naturals, for example, 1156002 + ... + 1156998.

It is an arithmetic number, because the mean of its divisors is an integer number (25383631).

Almost surely, 2^1153030500 is an apocalyptic number.

1153030500 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 1153030500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1827621432).

1153030500 is an abundant number, since it is smaller than the sum of its proper divisors (2502212364).

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

1153030500 is a wasteful number, since it uses less digits than its factorization.

1153030500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1264 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1153030500 is about 33956.3028022781. The cubic root of 1153030500 is about 1048.6090425363.

The spelling of 1153030500 in words is "one billion, one hundred fifty-three million, thirty thousand, five hundred".