1103204491 has 4 divisors (see below), whose sum is σ = 1103271192. Its totient is φ = 1103137792.

The previous prime is 1103204489. The next prime is 1103204503. The reversal of 1103204491 is 1944023011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1103204491 - 2¹ = 1103204489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103207491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12171 + ... + 48523.

It is an arithmetic number, because the mean of its divisors is an integer number (275817798).

Almost surely, 2^1103204491 is an apocalyptic number.

1103204491 is a deficient number, since it is larger than the sum of its proper divisors (66701).

1103204491 is an equidigital number, since it uses as much as digits as its factorization.

1103204491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66700.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1103204491 is about 33214.5222907089. The cubic root of 1103204491 is about 1033.2815473759.

The spelling of 1103204491 in words is "one billion, one hundred three million, two hundred four thousand, four hundred ninety-one".