1816718339 has 2 divisors, whose sum is σ = 1816718340. Its totient is φ = 1816718338.

The previous prime is 1816718329. The next prime is 1816718341. The reversal of 1816718339 is 9338176181.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1816718339 is a prime.

Together with 1816718341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1816718293 and 1816718302.

It is not a weakly prime, because it can be changed into another prime (1816718329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 908359169 + 908359170.

It is an arithmetic number, because the mean of its divisors is an integer number (908359170).

Almost surely, 2^1816718339 is an apocalyptic number.

1816718339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816718339 is an equidigital number, since it uses as much as digits as its factorization.

1816718339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 1816718339 is about 42622.9790019421. The cubic root of 1816718339 is about 1220.1948848843.

The spelling of 1816718339 in words is "one billion, eight hundred sixteen million, seven hundred eighteen thousand, three hundred thirty-nine".