1306163 has 4 divisors (see below), whose sum is σ = 1313640. Its totient is φ = 1298688.

The previous prime is 1306159. The next prime is 1306169. The reversal of 1306163 is 3616031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3616031 = 53 ⋅68227.

It is a cyclic number.

It is not a de Polignac number, because 1306163 - 2² = 1306159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306169) 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 in 3 ways as a sum of consecutive naturals, for example, 3470 + ... + 3827.

It is an arithmetic number, because the mean of its divisors is an integer number (328410).

2^1306163 is an apocalyptic number.

1306163 is a deficient number, since it is larger than the sum of its proper divisors (7477).

1306163 is an equidigital number, since it uses as much as digits as its factorization.

1306163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1306163 is about 1142.8748837909. The cubic root of 1306163 is about 109.3114845379.

It can be divided in two parts, 1306 and 163, that multiplied together give a triangular number (212878 = T₆₅₂).

The spelling of 1306163 in words is "one million, three hundred six thousand, one hundred sixty-three".