2278963 has 2 divisors, whose sum is σ = 2278964. Its totient is φ = 2278962.

The previous prime is 2278961. The next prime is 2278967. The reversal of 2278963 is 3698722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2278963 - 2¹ = 2278961 is a prime.

Together with 2278961, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2²⁰ + 2²⁰ + 7³ + 8⁴ + 9 + 6³ + 3¹¹ .

It is not a weakly prime, because it can be changed into another prime (2278961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139481 + 1139482.

It is an arithmetic number, because the mean of its divisors is an integer number (1139482).

2^2278963 is an apocalyptic number.

2278963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278963 is an equidigital number, since it uses as much as digits as its factorization.

2278963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 2278963 is about 1509.6234629867. The cubic root of 2278963 is about 131.5969300812.

The spelling of 2278963 in words is "two million, two hundred seventy-eight thousand, nine hundred sixty-three".