1768408668 has 36 divisors (see below), whose sum is σ = 4814002648. Its totient is φ = 544125600.

The previous prime is 1768408667. The next prime is 1768408757. The reversal of 1768408668 is 8668048671.

1768408668 is a `hidden beast` number, since 176 + 8 + 408 + 6 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1768408667) 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 11 ways as a sum of consecutive naturals, for example, 1888858 + ... + 1889793.

Almost surely, 2^1768408668 is an apocalyptic number.

1768408668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1768408668 is an abundant number, since it is smaller than the sum of its proper divisors (3045593980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1768408668 is a wasteful number, since it uses less digits than its factorization.

1768408668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778674 (or 3778669 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 1768408668 is about 42052.4513910902. The cubic root of 1768408668 is about 1209.2818788303.

The spelling of 1768408668 in words is "one billion, seven hundred sixty-eight million, four hundred eight thousand, six hundred sixty-eight".