1280163 has 16 divisors (see below), whose sum is σ = 1848320. Its totient is φ = 785376.

The previous prime is 1280161. The next prime is 1280173. The reversal of 1280163 is 3610821.

It is not a de Polignac number, because 1280163 - 2¹ = 1280161 is a prime.

1280163 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1280161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806 + ... + 2412.

It is an arithmetic number, because the mean of its divisors is an integer number (115520).

2^1280163 is an apocalyptic number.

1280163 is a deficient number, since it is larger than the sum of its proper divisors (568157).

1280163 is a wasteful number, since it uses less digits than its factorization.

1280163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1280163 is about 1131.4428841086. The cubic root of 1280163 is about 108.5813133231.

Adding to 1280163 its reverse (3610821), we get a palindrome (4890984).

The spelling of 1280163 in words is "one million, two hundred eighty thousand, one hundred sixty-three".