381744361 has 2 divisors, whose sum is σ = 381744362. Its totient is φ = 381744360.

The previous prime is 381744289. The next prime is 381744379. The reversal of 381744361 is 163447183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348046336 + 33698025 = 18656^2 + 5805^2 .

It is a cyclic number.

It is not a de Polignac number, because 381744361 - 2¹³ = 381736169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381744361.

It is not a weakly prime, because it can be changed into another prime (381754361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190872180 + 190872181.

It is an arithmetic number, because the mean of its divisors is an integer number (190872181).

Almost surely, 2^381744361 is an apocalyptic number.

It is an amenable number.

381744361 is a deficient number, since it is larger than the sum of its proper divisors (1).

381744361 is an equidigital number, since it uses as much as digits as its factorization.

381744361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 381744361 is about 19538.2793766493. The cubic root of 381744361 is about 725.4222580219.

The spelling of 381744361 in words is "three hundred eighty-one million, seven hundred forty-four thousand, three hundred sixty-one".