1155000103 has 16 divisors (see below), whose sum is σ = 1201291264. Its totient is φ = 1109596320.

The previous prime is 1155000089. The next prime is 1155000109. The reversal of 1155000103 is 3010005511.

It is a cyclic number.

It is not a de Polignac number, because 1155000103 - 2⁵ = 1155000071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155000109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272976 + ... + 1273882.

It is an arithmetic number, because the mean of its divisors is an integer number (75080704).

Almost surely, 2^1155000103 is an apocalyptic number.

1155000103 is a deficient number, since it is larger than the sum of its proper divisors (46291161).

1155000103 is a wasteful number, since it uses less digits than its factorization.

1155000103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 1155000103 is about 33985.2924512943. The cubic root of 1155000103 is about 1049.2057797508.

Adding to 1155000103 its reverse (3010005511), we get a palindrome (4165005614).

The spelling of 1155000103 in words is "one billion, one hundred fifty-five million, one hundred three", and thus it is an aban number.