1384918217 has 2 divisors, whose sum is σ = 1384918218. Its totient is φ = 1384918216.

The previous prime is 1384918187. The next prime is 1384918219. The reversal of 1384918217 is 7128194831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734464201 + 650454016 = 27101^2 + 25504^2 .

It is a cyclic number.

It is not a de Polignac number, because 1384918217 - 2²⁸ = 1116482761 is a prime.

Together with 1384918219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1384918219) 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, 692459108 + 692459109.

It is an arithmetic number, because the mean of its divisors is an integer number (692459109).

Almost surely, 2^1384918217 is an apocalyptic number.

It is an amenable number.

1384918217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1384918217 is an equidigital number, since it uses as much as digits as its factorization.

1384918217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The square root of 1384918217 is about 37214.4893421904. The cubic root of 1384918217 is about 1114.6573291934.

The spelling of 1384918217 in words is "one billion, three hundred eighty-four million, nine hundred eighteen thousand, two hundred seventeen".