1800551280163 has 2 divisors, whose sum is σ = 1800551280164. Its totient is φ = 1800551280162.

The previous prime is 1800551280137. The next prime is 1800551280173. The reversal of 1800551280163 is 3610821550081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1800551280163 - 2⁹ = 1800551279651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1800551280173) 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, 900275640081 + 900275640082.

It is an arithmetic number, because the mean of its divisors is an integer number (900275640082).

Almost surely, 2^{1800551280163} is an apocalyptic number.

1800551280163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800551280163 is an equidigital number, since it uses as much as digits as its factorization.

1800551280163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 1800551280163 in words is "one trillion, eight hundred billion, five hundred fifty-one million, two hundred eighty thousand, one hundred sixty-three".