380743919921 has 2 divisors, whose sum is σ = 380743919922. Its totient is φ = 380743919920.

The previous prime is 380743919909. The next prime is 380743919987. The reversal of 380743919921 is 129919347083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355169513521 + 25574406400 = 595961^2 + 159920^2 .

It is a cyclic number.

It is not a de Polignac number, because 380743919921 - 2¹⁴ = 380743903537 is a prime.

It is not a weakly prime, because it can be changed into another prime (380743919321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190371959960 + 190371959961.

It is an arithmetic number, because the mean of its divisors is an integer number (190371959961).

Almost surely, 2^380743919921 is an apocalyptic number.

It is an amenable number.

380743919921 is a deficient number, since it is larger than the sum of its proper divisors (1).

380743919921 is an equidigital number, since it uses as much as digits as its factorization.

380743919921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 380743919921 in words is "three hundred eighty billion, seven hundred forty-three million, nine hundred nineteen thousand, nine hundred twenty-one".