1820206467143 has 2 divisors, whose sum is σ = 1820206467144. Its totient is φ = 1820206467142.

The previous prime is 1820206467139. The next prime is 1820206467173. The reversal of 1820206467143 is 3417646020281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1820206467143 - 2² = 1820206467139 is a prime.

It is a super-2 number, since 2×1820206467143² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1820206467094 and 1820206467103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1820206467103) 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 as a sum of consecutive naturals, namely, 910103233571 + 910103233572.

It is an arithmetic number, because the mean of its divisors is an integer number (910103233572).

Almost surely, 2^{1820206467143} is an apocalyptic number.

1820206467143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820206467143 is an equidigital number, since it uses as much as digits as its factorization.

1820206467143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 1820206467143 in words is "one trillion, eight hundred twenty billion, two hundred six million, four hundred sixty-seven thousand, one hundred forty-three".