1838365638203 has 2 divisors, whose sum is σ = 1838365638204. Its totient is φ = 1838365638202.

The previous prime is 1838365638121. The next prime is 1838365638209. The reversal of 1838365638203 is 3028365638381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1838365638203 - 2¹⁴ = 1838365621819 is a prime.

It is a super-3 number, since 3×1838365638203³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1838365638209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919182819101 + 919182819102.

It is an arithmetic number, because the mean of its divisors is an integer number (919182819102).

Almost surely, 2^{1838365638203} is an apocalyptic number.

1838365638203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838365638203 is an equidigital number, since it uses as much as digits as its factorization.

1838365638203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 1838365638203 in words is "one trillion, eight hundred thirty-eight billion, three hundred sixty-five million, six hundred thirty-eight thousand, two hundred three".