1387163 has 2 divisors, whose sum is σ = 1387164. Its totient is φ = 1387162.

The previous prime is 1387151. The next prime is 1387189. The reversal of 1387163 is 3617831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1387163 - 2⁴ = 1387147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1387123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693581 + 693582.

It is an arithmetic number, because the mean of its divisors is an integer number (693582).

2^1387163 is an apocalyptic number.

1387163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387163 is an equidigital number, since it uses as much as digits as its factorization.

1387163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 1387163 is about 1177.7788417186. The cubic root of 1387163 is about 111.5259245155.

The spelling of 1387163 in words is "one million, three hundred eighty-seven thousand, one hundred sixty-three".