1820416545053 has 4 divisors (see below), whose sum is σ = 1821066464508. Its totient is φ = 1819766625600.

The previous prime is 1820416545023. The next prime is 1820416545083. The reversal of 1820416545053 is 3505456140281.

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

It is an interprime number because it is at equal distance from previous prime (1820416545023) and next prime (1820416545083).

It can be written as a sum of positive squares in 2 ways, for example, as 597439335364 + 1222977209689 = 772942^2 + 1105883^2 .

It is a cyclic number.

It is not a de Polignac number, because 1820416545053 - 2⁴⁰ = 720904917277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1820416544995 and 1820416545013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820416545023) 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 in 3 ways as a sum of consecutive naturals, for example, 324955526 + ... + 324961127.

It is an arithmetic number, because the mean of its divisors is an integer number (455266616127).

Almost surely, 2^{1820416545053} is an apocalyptic number.

It is an amenable number.

1820416545053 is a deficient number, since it is larger than the sum of its proper divisors (649919455).

1820416545053 is an equidigital number, since it uses as much as digits as its factorization.

1820416545053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649919454.

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 1820416545053 in words is "one trillion, eight hundred twenty billion, four hundred sixteen million, five hundred forty-five thousand, fifty-three".