1368618729 has 8 divisors (see below), whose sum is σ = 1832794560. Its totient is φ = 908427696.

The previous prime is 1368618707. The next prime is 1368618733. The reversal of 1368618729 is 9278168631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1368618729 - 2⁹ = 1368618217 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1368618739) 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 in 7 ways as a sum of consecutive naturals, for example, 995397 + ... + 996770.

It is an arithmetic number, because the mean of its divisors is an integer number (229099320).

Almost surely, 2^1368618729 is an apocalyptic number.

It is an amenable number.

1368618729 is a deficient number, since it is larger than the sum of its proper divisors (464175831).

1368618729 is a wasteful number, since it uses less digits than its factorization.

1368618729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992399.

The product of its digits is 870912, while the sum is 51.

The square root of 1368618729 is about 36994.8473304054. The cubic root of 1368618729 is about 1110.2671566999.

The spelling of 1368618729 in words is "one billion, three hundred sixty-eight million, six hundred eighteen thousand, seven hundred twenty-nine".