381609328123 has 2 divisors, whose sum is σ = 381609328124. Its totient is φ = 381609328122.

The previous prime is 381609328117. The next prime is 381609328141. The reversal of 381609328123 is 321823906183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381609328123 - 2¹⁷ = 381609197051 is a prime.

It is not a weakly prime, because it can be changed into another prime (381609328193) 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, 190804664061 + 190804664062.

It is an arithmetic number, because the mean of its divisors is an integer number (190804664062).

Almost surely, 2^381609328123 is an apocalyptic number.

381609328123 is a deficient number, since it is larger than the sum of its proper divisors (1).

381609328123 is an equidigital number, since it uses as much as digits as its factorization.

381609328123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 381609328123 in words is "three hundred eighty-one billion, six hundred nine million, three hundred twenty-eight thousand, one hundred twenty-three".