2278163 has 4 divisors (see below), whose sum is σ = 2282280. Its totient is φ = 2274048.

The previous prime is 2278141. The next prime is 2278181. The reversal of 2278163 is 3618722.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2278163 - 2⁸ = 2277907 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 2²¹ + 7 + 8³ + 1 + 6⁴ + 3¹¹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 2387.

It is an arithmetic number, because the mean of its divisors is an integer number (570570).

2^2278163 is an apocalyptic number.

2278163 is a deficient number, since it is larger than the sum of its proper divisors (4117).

2278163 is an equidigital number, since it uses as much as digits as its factorization.

2278163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116.

The product of its digits is 4032, while the sum is 29.

The square root of 2278163 is about 1509.3584729944. The cubic root of 2278163 is about 131.5815298216.

The spelling of 2278163 in words is "two million, two hundred seventy-eight thousand, one hundred sixty-three".