381744073 has 2 divisors, whose sum is σ = 381744074. Its totient is φ = 381744072.

The previous prime is 381744047. The next prime is 381744119. The reversal of 381744073 is 370447183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334450944 + 47293129 = 18288^2 + 6877^2 .

It is an emirp because it is prime and its reverse (370447183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381744073 - 2⁹ = 381743561 is a prime.

It is not a weakly prime, because it can be changed into another prime (381744773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190872036 + 190872037.

It is an arithmetic number, because the mean of its divisors is an integer number (190872037).

Almost surely, 2^381744073 is an apocalyptic number.

It is an amenable number.

381744073 is a deficient number, since it is larger than the sum of its proper divisors (1).

381744073 is an equidigital number, since it uses as much as digits as its factorization.

381744073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 381744073 is about 19538.2720065005. The cubic root of 381744073 is about 725.4220755947.

The spelling of 381744073 in words is "three hundred eighty-one million, seven hundred forty-four thousand, seventy-three".