3918782103285 has 24 divisors (see below), whose sum is σ = 7293733222176. Its totient is φ = 1791443246880.

The previous prime is 3918782103277. The next prime is 3918782103289. The reversal of 3918782103285 is 5823012878193.

It is not a de Polignac number, because 3918782103285 - 2³ = 3918782103277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918782103289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2665837431 + ... + 2665838900.

It is an arithmetic number, because the mean of its divisors is an integer number (303905550924).

Almost surely, 2^{3918782103285} is an apocalyptic number.

3918782103285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3918782103285 is a deficient number, since it is larger than the sum of its proper divisors (3374951118891).

3918782103285 is a wasteful number, since it uses less digits than its factorization.

3918782103285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331676353 (or 5331676346 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 3918782103285 in words is "three trillion, nine hundred eighteen billion, seven hundred eighty-two million, one hundred three thousand, two hundred eighty-five".