2478816239 has 2 divisors, whose sum is σ = 2478816240. Its totient is φ = 2478816238.

The previous prime is 2478816199. The next prime is 2478816269. The reversal of 2478816239 is 9326188742.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2478816239 is a prime.

It is a super-2 number, since 2×2478816239² = 12289059893460210242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478816269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239408119 + 1239408120.

It is an arithmetic number, because the mean of its divisors is an integer number (1239408120).

Almost surely, 2^2478816239 is an apocalyptic number.

2478816239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478816239 is an equidigital number, since it uses as much as digits as its factorization.

2478816239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 2478816239 is about 49787.7117268910. The cubic root of 2478816239 is about 1353.3644912154.

The spelling of 2478816239 in words is "two billion, four hundred seventy-eight million, eight hundred sixteen thousand, two hundred thirty-nine".