3918943918 has 16 divisors (see below), whose sum is σ = 6283611936. Its totient is φ = 1828562560.

The previous prime is 3918943907. The next prime is 3918943927. The reversal of 3918943918 is 8193498193.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037071 + ... + 1040842.

It is an arithmetic number, because the mean of its divisors is an integer number (392725746).

Almost surely, 2^3918943918 is an apocalyptic number.

3918943918 is a deficient number, since it is larger than the sum of its proper divisors (2364668018).

3918943918 is a wasteful number, since it uses less digits than its factorization.

3918943918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077979.

The product of its digits is 1679616, while the sum is 55.

The square root of 3918943918 is about 62601.4689763747. The cubic root of 3918943918 is about 1576.6054234612.

The spelling of 3918943918 in words is "three billion, nine hundred eighteen million, nine hundred forty-three thousand, nine hundred eighteen".