3918943218 has 32 divisors (see below), whose sum is σ = 7955510400. Its totient is φ = 1286841600.

The previous prime is 3918943201. The next prime is 3918943243. The reversal of 3918943218 is 8123498193.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104346 + ... + 136842.

It is an arithmetic number, because the mean of its divisors is an integer number (248609700).

Almost surely, 2^3918943218 is an apocalyptic number.

3918943218 is an abundant number, since it is smaller than the sum of its proper divisors (4036567182).

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

3918943218 is a wasteful number, since it uses less digits than its factorization.

3918943218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32802.

The product of its digits is 373248, while the sum is 48.

The square root of 3918943218 is about 62601.4633854513. The cubic root of 3918943218 is about 1576.6053295904.

The spelling of 3918943218 in words is "three billion, nine hundred eighteen million, nine hundred forty-three thousand, two hundred eighteen".