1803313055 has 4 divisors (see below), whose sum is σ = 2163975672. Its totient is φ = 1442650440.

The previous prime is 1803313037. The next prime is 1803313081. The reversal of 1803313055 is 5503133081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5503133081 = 2087 ⋅2636863.

It is not a de Polignac number, because 1803313055 - 2¹² = 1803308959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180331301 + ... + 180331310.

It is an arithmetic number, because the mean of its divisors is an integer number (540993918).

Almost surely, 2^1803313055 is an apocalyptic number.

1803313055 is a deficient number, since it is larger than the sum of its proper divisors (360662617).

1803313055 is an equidigital number, since it uses as much as digits as its factorization.

1803313055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360662616.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1803313055 is about 42465.4336490280. The cubic root of 1803313055 is about 1217.1862627941.

The spelling of 1803313055 in words is "one billion, eight hundred three million, three hundred thirteen thousand, fifty-five".