3818909189 has 16 divisors (see below), whose sum is σ = 4262823936. Its totient is φ = 3404294400.

The previous prime is 3818909153. The next prime is 3818909191. The reversal of 3818909189 is 9819098183.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3818909189 - 2¹⁶ = 3818843653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3818902189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52322 + ... + 101859.

It is an arithmetic number, because the mean of its divisors is an integer number (266426496).

Almost surely, 2^3818909189 is an apocalyptic number.

It is an amenable number.

3818909189 is a deficient number, since it is larger than the sum of its proper divisors (443914747).

3818909189 is a wasteful number, since it uses less digits than its factorization.

3818909189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154276.

The product of its (nonzero) digits is 1119744, while the sum is 56.

The square root of 3818909189 is about 61797.3234776394. The cubic root of 3818909189 is about 1563.0748564179.

The spelling of 3818909189 in words is "three billion, eight hundred eighteen million, nine hundred nine thousand, one hundred eighty-nine".