3956042838 has 32 divisors (see below), whose sum is σ = 8634314880. Its totient is φ = 1198391360.

The previous prime is 3956042837. The next prime is 3956042843. The reversal of 3956042838 is 8382406593.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956042833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225106 + ... + 242042.

It is an arithmetic number, because the mean of its divisors is an integer number (269822340).

Almost surely, 2^3956042838 is an apocalyptic number.

3956042838 is an abundant number, since it is smaller than the sum of its proper divisors (4678272042).

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

3956042838 is a wasteful number, since it uses less digits than its factorization.

3956042838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20492.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 3956042838 is about 62897.0813154315. The cubic root of 3956042838 is about 1581.5648170107.

The spelling of 3956042838 in words is "three billion, nine hundred fifty-six million, forty-two thousand, eight hundred thirty-eight".