3956316818 has 4 divisors (see below), whose sum is σ = 5934475230. Its totient is φ = 1978158408.

The previous prime is 3956316769. The next prime is 3956316839. The reversal of 3956316818 is 8186136593.

It is a happy number.

3956316818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8186136593 = 47 ⋅174173119.

It can be written as a sum of positive squares in only one way, i.e., 3945472969 + 10843849 = 62813^2 + 3293^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989079203 + ... + 989079206.

Almost surely, 2^3956316818 is an apocalyptic number.

3956316818 is a deficient number, since it is larger than the sum of its proper divisors (1978158412).

3956316818 is a wasteful number, since it uses less digits than its factorization.

3956316818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978158411.

The product of its digits is 933120, while the sum is 50.

The square root of 3956316818 is about 62899.2592802173. The cubic root of 3956316818 is about 1581.6013271585.

The spelling of 3956316818 in words is "three billion, nine hundred fifty-six million, three hundred sixteen thousand, eight hundred eighteen".