383608778838 has 16 divisors (see below), whose sum is σ = 767300817600. Its totient is φ = 127855716296.

The previous prime is 383608778827. The next prime is 383608778849. The reversal of 383608778838 is 838877806383.

It is an interprime number because it is at equal distance from previous prime (383608778827) and next prime (383608778849).

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3409188 + ... + 3519911.

It is an arithmetic number, because the mean of its divisors is an integer number (47956301100).

Almost surely, 2^383608778838 is an apocalyptic number.

383608778838 is an abundant number, since it is smaller than the sum of its proper divisors (383692038762).

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

383608778838 is a wasteful number, since it uses less digits than its factorization.

383608778838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938331.

The product of its (nonzero) digits is 260112384, while the sum is 69.

The spelling of 383608778838 in words is "three hundred eighty-three billion, six hundred eight million, seven hundred seventy-eight thousand, eight hundred thirty-eight".