1803853418485 has 4 divisors (see below), whose sum is σ = 2164624102188. Its totient is φ = 1443082734784.

The previous prime is 1803853418483. The next prime is 1803853418501. The reversal of 1803853418485 is 5848143583081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 380036493841 + 1423816924644 = 616471^2 + 1193238^2 .

It is a cyclic number.

It is not a de Polignac number, because 1803853418485 - 2¹ = 1803853418483 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 (1803853418483) 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, 180385341844 + ... + 180385341853.

It is an arithmetic number, because the mean of its divisors is an integer number (541156025547).

Almost surely, 2^{1803853418485} is an apocalyptic number.

It is an amenable number.

1803853418485 is a deficient number, since it is larger than the sum of its proper divisors (360770683703).

1803853418485 is an equidigital number, since it uses as much as digits as its factorization.

1803853418485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360770683702.

The product of its (nonzero) digits is 14745600, while the sum is 58.

The spelling of 1803853418485 in words is "one trillion, eight hundred three billion, eight hundred fifty-three million, four hundred eighteen thousand, four hundred eighty-five".