1803828273809 has 2 divisors, whose sum is σ = 1803828273810. Its totient is φ = 1803828273808.

The previous prime is 1803828273763. The next prime is 1803828273817. The reversal of 1803828273809 is 9083728283081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967203406225 + 836624867584 = 983465^2 + 914672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1803828273809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1803828270809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901914136904 + 901914136905.

It is an arithmetic number, because the mean of its divisors is an integer number (901914136905).

Almost surely, 2^{1803828273809} is an apocalyptic number.

It is an amenable number.

1803828273809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1803828273809 is an equidigital number, since it uses as much as digits as its factorization.

1803828273809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 1803828273809 in words is "one trillion, eight hundred three billion, eight hundred twenty-eight million, two hundred seventy-three thousand, eight hundred nine".