3918808325 has 6 divisors (see below), whose sum is σ = 4859322354. Its totient is φ = 3135046640.

The previous prime is 3918808319. The next prime is 3918808357. The reversal of 3918808325 is 5238088193.

It can be written as a sum of positive squares in 3 ways, for example, as 237838084 + 3680970241 = 15422^2 + 60671^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3918808325 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3918808325.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 78376142 + ... + 78376191.

It is an arithmetic number, because the mean of its divisors is an integer number (809887059).

Almost surely, 2^3918808325 is an apocalyptic number.

It is an amenable number.

3918808325 is a deficient number, since it is larger than the sum of its proper divisors (940514029).

3918808325 is a wasteful number, since it uses less digits than its factorization.

3918808325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156752343 (or 156752338 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 3918808325 is about 62600.3859812382. The cubic root of 3918808325 is about 1576.5872400655.

The spelling of 3918808325 in words is "three billion, nine hundred eighteen million, eight hundred eight thousand, three hundred twenty-five".