1385384177 has 2 divisors, whose sum is σ = 1385384178. Its totient is φ = 1385384176.

The previous prime is 1385384159. The next prime is 1385384239. The reversal of 1385384177 is 7714835831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1062499216 + 322884961 = 32596^2 + 17969^2 .

It is an emirp because it is prime and its reverse (7714835831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1385384177 - 2⁶ = 1385384113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1385384477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692692088 + 692692089.

It is an arithmetic number, because the mean of its divisors is an integer number (692692089).

Almost surely, 2^1385384177 is an apocalyptic number.

It is an amenable number.

1385384177 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385384177 is an equidigital number, since it uses as much as digits as its factorization.

1385384177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 47.

The square root of 1385384177 is about 37220.7492804753. The cubic root of 1385384177 is about 1114.7823251400.

The spelling of 1385384177 in words is "one billion, three hundred eighty-five million, three hundred eighty-four thousand, one hundred seventy-seven".