1820355784483 has 4 divisors (see below), whose sum is σ = 1820394356968. Its totient is φ = 1820317212000.

The previous prime is 1820355784453. The next prime is 1820355784487. The reversal of 1820355784483 is 3844875530281.

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

It is a cyclic number.

It is not a de Polignac number, because 1820355784483 - 2²¹ = 1820353687331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1820355784487) 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, 19215366 + ... + 19309867.

It is an arithmetic number, because the mean of its divisors is an integer number (455098589242).

Almost surely, 2^{1820355784483} is an apocalyptic number.

1820355784483 is a deficient number, since it is larger than the sum of its proper divisors (38572485).

1820355784483 is an equidigital number, since it uses as much as digits as its factorization.

1820355784483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38572484.

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 1820355784483 in words is "one trillion, eight hundred twenty billion, three hundred fifty-five million, seven hundred eighty-four thousand, four hundred eighty-three".