1830021218273 has 2 divisors, whose sum is σ = 1830021218274. Its totient is φ = 1830021218272.

The previous prime is 1830021218239. The next prime is 1830021218281. The reversal of 1830021218273 is 3728121200381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1807379094544 + 22642123729 = 1344388^2 + 150473^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830021218273 - 2⁸ = 1830021218017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1830021211273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915010609136 + 915010609137.

It is an arithmetic number, because the mean of its divisors is an integer number (915010609137).

Almost surely, 2^{1830021218273} is an apocalyptic number.

It is an amenable number.

1830021218273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1830021218273 is an equidigital number, since it uses as much as digits as its factorization.

1830021218273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 1830021218273 in words is "one trillion, eight hundred thirty billion, twenty-one million, two hundred eighteen thousand, two hundred seventy-three".