1155340188203 has 4 divisors (see below), whose sum is σ = 1155356716008. Its totient is φ = 1155323660400.

The previous prime is 1155340188187. The next prime is 1155340188209. The reversal of 1155340188203 is 3028810435511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1155340188203 - 2⁴ = 1155340188187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155340188209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8158601 + ... + 8299002.

It is an arithmetic number, because the mean of its divisors is an integer number (288839179002).

Almost surely, 2^{1155340188203} is an apocalyptic number.

1155340188203 is a deficient number, since it is larger than the sum of its proper divisors (16527805).

1155340188203 is an equidigital number, since it uses as much as digits as its factorization.

1155340188203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16527804.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 1155340188203 in words is "one trillion, one hundred fifty-five billion, three hundred forty million, one hundred eighty-eight thousand, two hundred three".