1103608813 has 2 divisors, whose sum is σ = 1103608814. Its totient is φ = 1103608812.

The previous prime is 1103608799. The next prime is 1103608837. The reversal of 1103608813 is 3188063011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1049630404 + 53978409 = 32398^2 + 7347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103608813 - 2⁹ = 1103608301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103608853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551804406 + 551804407.

It is an arithmetic number, because the mean of its divisors is an integer number (551804407).

Almost surely, 2^1103608813 is an apocalyptic number.

It is an amenable number.

1103608813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103608813 is an equidigital number, since it uses as much as digits as its factorization.

1103608813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1103608813 is about 33220.6082575259. The cubic root of 1103608813 is about 1033.4077637565.

The spelling of 1103608813 in words is "one billion, one hundred three million, six hundred eight thousand, eight hundred thirteen".