381327773 has 2 divisors, whose sum is σ = 381327774. Its totient is φ = 381327772.

The previous prime is 381327761. The next prime is 381327829. The reversal of 381327773 is 377723183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285542404 + 95785369 = 16898^2 + 9787^2 .

It is a cyclic number.

It is not a de Polignac number, because 381327773 - 2⁸ = 381327517 is a prime.

It is a super-2 number, since 2×381327773² = 290821740922279058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 381327773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381327173) 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, 190663886 + 190663887.

It is an arithmetic number, because the mean of its divisors is an integer number (190663887).

Almost surely, 2^381327773 is an apocalyptic number.

It is an amenable number.

381327773 is a deficient number, since it is larger than the sum of its proper divisors (1).

381327773 is an equidigital number, since it uses as much as digits as its factorization.

381327773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 41.

The square root of 381327773 is about 19527.6156506625. The cubic root of 381327773 is about 725.1582836333.

The spelling of 381327773 in words is "three hundred eighty-one million, three hundred twenty-seven thousand, seven hundred seventy-three".