3856138695 has 24 divisors (see below), whose sum is σ = 6732070800. Its totient is φ = 2041808256.

The previous prime is 3856138661. The next prime is 3856138709. The reversal of 3856138695 is 5968316583.

It is not a de Polignac number, because 3856138695 - 2⁷ = 3856138567 is a prime.

It is a super-4 number, since 4×3856138695⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301990 + ... + 314499.

It is an arithmetic number, because the mean of its divisors is an integer number (280502950).

Almost surely, 2^3856138695 is an apocalyptic number.

3856138695 is a deficient number, since it is larger than the sum of its proper divisors (2875932105).

3856138695 is a wasteful number, since it uses less digits than its factorization.

3856138695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616639 (or 616636 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 3856138695 is about 62097.8155412894. The cubic root of 3856138695 is about 1568.1377699766.

The spelling of 3856138695 in words is "three billion, eight hundred fifty-six million, one hundred thirty-eight thousand, six hundred ninety-five".