3957838518 has 32 divisors (see below), whose sum is σ = 8030532096. Its totient is φ = 1300166208.

The previous prime is 3957838517. The next prime is 3957838537. The reversal of 3957838518 is 8158387593.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957838517) 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, 701055 + ... + 706677.

It is an arithmetic number, because the mean of its divisors is an integer number (250954128).

Almost surely, 2^3957838518 is an apocalyptic number.

3957838518 is an abundant number, since it is smaller than the sum of its proper divisors (4072693578).

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

3957838518 is a wasteful number, since it uses less digits than its factorization.

3957838518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7308.

The product of its digits is 7257600, while the sum is 57.

The square root of 3957838518 is about 62911.3544441701. The cubic root of 3957838518 is about 1581.8040758558.

The spelling of 3957838518 in words is "three billion, nine hundred fifty-seven million, eight hundred thirty-eight thousand, five hundred eighteen".