3918345609864 has 48 divisors (see below), whose sum is σ = 11395188766800. Its totient is φ = 1119527316768.

The previous prime is 3918345609839. The next prime is 3918345609877. The reversal of 3918345609864 is 4689065438193.

It is a junction number, because it is equal to n+sod(n) for n = 3918345609795 and 3918345609804.

It is an unprimeable number.

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, 1665962094 + ... + 1665964445.

It is an arithmetic number, because the mean of its divisors is an integer number (237399765975).

Almost surely, 2^{3918345609864} is an apocalyptic number.

It is an amenable number.

3918345609864 is an abundant number, since it is smaller than the sum of its proper divisors (7476843156936).

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

3918345609864 is a wasteful number, since it uses less digits than its factorization.

3918345609864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331926562 (or 3331926551 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 66.

The spelling of 3918345609864 in words is "three trillion, nine hundred eighteen billion, three hundred forty-five million, six hundred nine thousand, eight hundred sixty-four".