1381824317 has 2 divisors, whose sum is σ = 1381824318. Its totient is φ = 1381824316.

The previous prime is 1381824293. The next prime is 1381824377. The reversal of 1381824317 is 7134281831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1298449156 + 83375161 = 36034^2 + 9131^2 .

It is an emirp because it is prime and its reverse (7134281831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1381824317 - 2¹⁰ = 1381823293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381824377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690912158 + 690912159.

It is an arithmetic number, because the mean of its divisors is an integer number (690912159).

Almost surely, 2^1381824317 is an apocalyptic number.

It is an amenable number.

1381824317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381824317 is an equidigital number, since it uses as much as digits as its factorization.

1381824317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 1381824317 is about 37172.8976137185. The cubic root of 1381824317 is about 1113.8266641186.

The spelling of 1381824317 in words is "one billion, three hundred eighty-one million, eight hundred twenty-four thousand, three hundred seventeen".