381818818103 has 2 divisors, whose sum is σ = 381818818104. Its totient is φ = 381818818102.

The previous prime is 381818818091. The next prime is 381818818193. The reversal of 381818818103 is 301818818183.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381818818103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381818818193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190909409051 + 190909409052.

It is an arithmetic number, because the mean of its divisors is an integer number (190909409052).

Almost surely, 2^381818818103 is an apocalyptic number.

381818818103 is a deficient number, since it is larger than the sum of its proper divisors (1).

381818818103 is an equidigital number, since it uses as much as digits as its factorization.

381818818103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 50.

The spelling of 381818818103 in words is "three hundred eighty-one billion, eight hundred eighteen million, eight hundred eighteen thousand, one hundred three".