1368018329 has 2 divisors, whose sum is σ = 1368018330. Its totient is φ = 1368018328.

The previous prime is 1368018307. The next prime is 1368018347. The reversal of 1368018329 is 9238108631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122250000 + 245768329 = 33500^2 + 15677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368018329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1368018929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684009164 + 684009165.

It is an arithmetic number, because the mean of its divisors is an integer number (684009165).

Almost surely, 2^1368018329 is an apocalyptic number.

It is an amenable number.

1368018329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368018329 is an equidigital number, since it uses as much as digits as its factorization.

1368018329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1368018329 is about 36986.7317966862. The cubic root of 1368018329 is about 1110.1047784109.

The spelling of 1368018329 in words is "one billion, three hundred sixty-eight million, eighteen thousand, three hundred twenty-nine".