1803662053 has 4 divisors (see below), whose sum is σ = 1803750028. Its totient is φ = 1803574080.

The previous prime is 1803662041. The next prime is 1803662059. The reversal of 1803662053 is 3502663081.

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 can be written as a sum of positive squares in 2 ways, for example, as 656281924 + 1147380129 = 25618^2 + 33873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1803662053 - 2¹³ = 1803653861 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 (1803662059) 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, 4813 + ... + 60253.

It is an arithmetic number, because the mean of its divisors is an integer number (450937507).

Almost surely, 2^1803662053 is an apocalyptic number.

It is an amenable number.

1803662053 is a deficient number, since it is larger than the sum of its proper divisors (87975).

1803662053 is an equidigital number, since it uses as much as digits as its factorization.

1803662053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87974.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1803662053 is about 42469.5426511753. The cubic root of 1803662053 is about 1217.2647790505.

It can be divided in two parts, 18036 and 62053, that added together give a square (80089 = 283²).

The spelling of 1803662053 in words is "one billion, eight hundred three million, six hundred sixty-two thousand, fifty-three".