1368317618 has 16 divisors (see below), whose sum is σ = 2125944576. Its totient is φ = 659820720.

The previous prime is 1368317603. The next prime is 1368317677. The reversal of 1368317618 is 8167138631.

It is an unprimeable number.

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, 19496 + ... + 55827.

It is an arithmetic number, because the mean of its divisors is an integer number (132871536).

Almost surely, 2^1368317618 is an apocalyptic number.

1368317618 is a deficient number, since it is larger than the sum of its proper divisors (757626958).

1368317618 is a wasteful number, since it uses less digits than its factorization.

1368317618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75649.

The product of its digits is 145152, while the sum is 44.

The square root of 1368317618 is about 36990.7774722295. Note that the first 3 decimals coincide. The cubic root of 1368317618 is about 1110.1857271127.

The spelling of 1368317618 in words is "one billion, three hundred sixty-eight million, three hundred seventeen thousand, six hundred eighteen".