1768638608 has 60 divisors (see below), whose sum is σ = 3787090944. Its totient is φ = 799550400.

The previous prime is 1768638601. The next prime is 1768638653. The reversal of 1768638608 is 8068368671.

It is a self number, because there is not a number n which added to its sum of digits gives 1768638608.

It is not an unprimeable number, because it can be changed into a prime (1768638601) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 367385 + ... + 372167.

Almost surely, 2^1768638608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1768638608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1893545472).

1768638608 is an abundant number, since it is smaller than the sum of its proper divisors (2018452336).

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

1768638608 is a wasteful number, since it uses less digits than its factorization.

1768638608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004 (or 4987 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 1768638608 is about 42055.1852688821. The cubic root of 1768638608 is about 1209.3342894579.

The spelling of 1768638608 in words is "one billion, seven hundred sixty-eight million, six hundred thirty-eight thousand, six hundred eight".