3818913668 has 12 divisors (see below), whose sum is σ = 6751997532. Its totient is φ = 1889771520.

The previous prime is 3818913667. The next prime is 3818913689. The reversal of 3818913668 is 8663198183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1238476864 + 2580436804 = 35192^2 + 50798^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3818913667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4920893 + ... + 4921668.

It is an arithmetic number, because the mean of its divisors is an integer number (562666461).

Almost surely, 2^3818913668 is an apocalyptic number.

It is an amenable number.

3818913668 is a deficient number, since it is larger than the sum of its proper divisors (2933083864).

3818913668 is a wasteful number, since it uses less digits than its factorization.

3818913668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9842662 (or 9842660 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 3818913668 is about 61797.3597170623. The cubic root of 3818913668 is about 1563.0754675007.

The spelling of 3818913668 in words is "three billion, eight hundred eighteen million, nine hundred thirteen thousand, six hundred sixty-eight".