2278519 has 2 divisors, whose sum is σ = 2278520. Its totient is φ = 2278518.

The previous prime is 2278517. The next prime is 2278543. The reversal of 2278519 is 9158722.

2278519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2278519 - 2¹ = 2278517 is a prime.

It is a super-2 number, since 2×2278519² = 10383297666722, which contains 22 as substring.

Together with 2278517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278517) 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, 1139259 + 1139260.

It is an arithmetic number, because the mean of its divisors is an integer number (1139260).

2^2278519 is an apocalyptic number.

2278519 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278519 is an equidigital number, since it uses as much as digits as its factorization.

2278519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 34.

The square root of 2278519 is about 1509.4763992855. The cubic root of 2278519 is about 131.5883833822.

It can be divided in two parts, 22785 and 19, that multiplied together give a triangular number (432915 = T₉₃₀).

The spelling of 2278519 in words is "two million, two hundred seventy-eight thousand, five hundred nineteen".