1155011204 has 18 divisors (see below), whose sum is σ = 2042388810. Its totient is φ = 571533312.

The previous prime is 1155011201. The next prime is 1155011213. The reversal of 1155011204 is 4021105511.

It can be written as a sum of positive squares in 3 ways, for example, as 466473604 + 688537600 = 21598^2 + 26240^2 .

It is not an unprimeable number, because it can be changed into a prime (1155011201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22292 + ... + 52980.

It is an arithmetic number, because the mean of its divisors is an integer number (113466045).

Almost surely, 2^1155011204 is an apocalyptic number.

It is an amenable number.

1155011204 is a deficient number, since it is larger than the sum of its proper divisors (887377606).

1155011204 is an equidigital number, since it uses as much as digits as its factorization.

1155011204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30887 (or 30788 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1155011204 is about 33985.4557715503. The cubic root of 1155011204 is about 1049.2091411346.

Adding to 1155011204 its reverse (4021105511), we get a palindrome (5176116715).

The spelling of 1155011204 in words is "one billion, one hundred fifty-five million, eleven thousand, two hundred four".