1368433618 has 32 divisors (see below), whose sum is σ = 2226464640. Its totient is φ = 628767360.

The previous prime is 1368433607. The next prime is 1368433621. The reversal of 1368433618 is 8163348631.

It is a super-2 number, since 2×1368433618² = 3745221133745139848, which contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 165171 + ... + 173257.

It is an arithmetic number, because the mean of its divisors is an integer number (69577020).

Almost surely, 2^1368433618 is an apocalyptic number.

1368433618 is a deficient number, since it is larger than the sum of its proper divisors (858031022).

1368433618 is a wasteful number, since it uses less digits than its factorization.

1368433618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242.

The product of its digits is 248832, while the sum is 43.

The square root of 1368433618 is about 36992.3453973927. The cubic root of 1368433618 is about 1110.2170984609.

The spelling of 1368433618 in words is "one billion, three hundred sixty-eight million, four hundred thirty-three thousand, six hundred eighteen".