3878939746 has 16 divisors (see below), whose sum is σ = 6361141248. Its totient is φ = 1759325200.

The previous prime is 3878939717. The next prime is 3878939749. The reversal of 3878939746 is 6479398783.

It is a super-3 number, since 3×3878939746³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3878939749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181090 + ... + 201373.

It is an arithmetic number, because the mean of its divisors is an integer number (397571328).

Almost surely, 2^3878939746 is an apocalyptic number.

3878939746 is a deficient number, since it is larger than the sum of its proper divisors (2482201502).

3878939746 is a wasteful number, since it uses less digits than its factorization.

3878939746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382937.

The product of its digits is 54867456, while the sum is 64.

The square root of 3878939746 is about 62281.1347520258. The cubic root of 3878939746 is about 1571.2224573735. Note that the first 3 decimals are identical.

The spelling of 3878939746 in words is "three billion, eight hundred seventy-eight million, nine hundred thirty-nine thousand, seven hundred forty-six".