3958431318 has 24 divisors (see below), whose sum is σ = 8617256856. Its totient is φ = 1313222400.

The previous prime is 3958431313. The next prime is 3958431331. The reversal of 3958431318 is 8131348593.

3958431318 is a `hidden beast` number, since 3 + 9 + 584 + 31 + 31 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958431311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517323 + ... + 524918.

It is an arithmetic number, because the mean of its divisors is an integer number (359052369).

Almost surely, 2^3958431318 is an apocalyptic number.

3958431318 is an abundant number, since it is smaller than the sum of its proper divisors (4658825538).

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

3958431318 is a wasteful number, since it uses less digits than its factorization.

3958431318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042460 (or 1042457 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3958431318 is about 62916.0656589396. The cubic root of 3958431318 is about 1581.8830454449.

The spelling of 3958431318 in words is "three billion, nine hundred fifty-eight million, four hundred thirty-one thousand, three hundred eighteen".