381744289 has 2 divisors, whose sum is σ = 381744290. Its totient is φ = 381744288.

The previous prime is 381744277. The next prime is 381744361. The reversal of 381744289 is 982447183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213393664 + 168350625 = 14608^2 + 12975^2 .

It is a cyclic number.

It is not a de Polignac number, because 381744289 - 2¹¹ = 381742241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381744689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190872144 + 190872145.

It is an arithmetic number, because the mean of its divisors is an integer number (190872145).

Almost surely, 2^381744289 is an apocalyptic number.

It is an amenable number.

381744289 is a deficient number, since it is larger than the sum of its proper divisors (1).

381744289 is an equidigital number, since it uses as much as digits as its factorization.

381744289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 381744289 is about 19538.2775341124. The cubic root of 381744289 is about 725.4222124151.

The spelling of 381744289 in words is "three hundred eighty-one million, seven hundred forty-four thousand, two hundred eighty-nine".