1808103876053 has 4 divisors (see below), whose sum is σ = 1808160458988. Its totient is φ = 1808047293120.

The previous prime is 1808103876049. The next prime is 1808103876083. The reversal of 1808103876053 is 3506783018081.

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 1214066811409 + 594037064644 = 1101847^2 + 770738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1808103876053 - 2² = 1808103876049 is a prime.

It is a super-3 number, since 3×1808103876053³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1808103875992 and 1808103876010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808103876083) 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, 28243508 + ... + 28307453.

It is an arithmetic number, because the mean of its divisors is an integer number (452040114747).

Almost surely, 2^{1808103876053} is an apocalyptic number.

It is an amenable number.

1808103876053 is a deficient number, since it is larger than the sum of its proper divisors (56582935).

1808103876053 is an equidigital number, since it uses as much as digits as its factorization.

1808103876053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56582934.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 1808103876053 in words is "one trillion, eight hundred eight billion, one hundred three million, eight hundred seventy-six thousand, fifty-three".