1664418068 has 12 divisors (see below), whose sum is σ = 2953756512. Its totient is φ = 820487640.

The previous prime is 1664418017. The next prime is 1664418137. The reversal of 1664418068 is 8608144661.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2930030 + ... + 2930597.

It is an arithmetic number, because the mean of its divisors is an integer number (246146376).

Almost surely, 2^1664418068 is an apocalyptic number.

It is an amenable number.

1664418068 is a deficient number, since it is larger than the sum of its proper divisors (1289338444).

1664418068 is a wasteful number, since it uses less digits than its factorization.

1664418068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860702 (or 5860700 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1664418068 is about 40797.2801544417. The cubic root of 1664418068 is about 1185.0976598227.

The spelling of 1664418068 in words is "one billion, six hundred sixty-four million, four hundred eighteen thousand, sixty-eight".