1008563778 has 32 divisors (see below), whose sum is σ = 2242776000. Its totient is φ = 335959488.

The previous prime is 1008563749. The next prime is 1008563779. The reversal of 1008563778 is 8773658001.

1008563778 is a `hidden beast` number, since 1 + 0 + 0 + 8 + 5 + 637 + 7 + 8 = 666.

1008563778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1008563779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86250 + ... + 97242.

It is an arithmetic number, because the mean of its divisors is an integer number (70086750).

Almost surely, 2^1008563778 is an apocalyptic number.

1008563778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1008563778 is an abundant number, since it is smaller than the sum of its proper divisors (1234212222).

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

1008563778 is a wasteful number, since it uses less digits than its factorization.

1008563778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12703 (or 12697 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1008563778 is about 31757.8931605987. The cubic root of 1008563778 is about 1002.8464825161.

The spelling of 1008563778 in words is "one billion, eight million, five hundred sixty-three thousand, seven hundred seventy-eight".