1155030000 has 100 divisors (see below), whose sum is σ = 3728687688. Its totient is φ = 308000000.

The previous prime is 1155029977. The next prime is 1155030137. The reversal of 1155030000 is 305511.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10750 + ... + 49250.

Almost surely, 2^1155030000 is an apocalyptic number.

1155030000 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 1155030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864343844).

1155030000 is an abundant number, since it is smaller than the sum of its proper divisors (2573657688).

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

1155030000 is an equidigital number, since it uses as much as digits as its factorization.

1155030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38532 (or 38511 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 1155030000 is about 33985.7323004816. The cubic root of 1155030000 is about 1049.2148325161.

Adding to 1155030000 its reverse (305511), we get a palindrome (1155335511).

The spelling of 1155030000 in words is "one billion, one hundred fifty-five million, thirty thousand".