1388820163 has 2 divisors, whose sum is σ = 1388820164. Its totient is φ = 1388820162.

The previous prime is 1388820127. The next prime is 1388820187. The reversal of 1388820163 is 3610288831.

It is a strong prime.

It is an emirp because it is prime and its reverse (3610288831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1388820163 - 2¹³ = 1388811971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1388820113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694410081 + 694410082.

It is an arithmetic number, because the mean of its divisors is an integer number (694410082).

Almost surely, 2^1388820163 is an apocalyptic number.

1388820163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388820163 is an equidigital number, since it uses as much as digits as its factorization.

1388820163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1388820163 is about 37266.8775590336. The cubic root of 1388820163 is about 1115.7031802169.

The spelling of 1388820163 in words is "one billion, three hundred eighty-eight million, eight hundred twenty thousand, one hundred sixty-three".