1218360719 has 2 divisors, whose sum is σ = 1218360720. Its totient is φ = 1218360718.

The previous prime is 1218360707. The next prime is 1218360721. The reversal of 1218360719 is 9170638121.

It is a strong prime.

It is an emirp because it is prime and its reverse (9170638121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1218360719 is a prime.

It is a super-2 number, since 2×1218360719² = 2968805683204393922, which contains 22 as substring.

Together with 1218360721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1218360779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609180359 + 609180360.

It is an arithmetic number, because the mean of its divisors is an integer number (609180360).

Almost surely, 2^1218360719 is an apocalyptic number.

1218360719 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218360719 is an equidigital number, since it uses as much as digits as its factorization.

1218360719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1218360719 is about 34905.0242658561. The cubic root of 1218360719 is about 1068.0509308030.

The spelling of 1218360719 in words is "one billion, two hundred eighteen million, three hundred sixty thousand, seven hundred nineteen".