3784990189 has 4 divisors (see below), whose sum is σ = 3785113756. Its totient is φ = 3784866624.

The previous prime is 3784990151. The next prime is 3784990199. The reversal of 3784990189 is 9810994873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9810994873 = 63709 ⋅153997.

It can be written as a sum of positive squares in 2 ways, for example, as 49702500 + 3735287689 = 7050^2 + 61117^2 .

It is a cyclic number.

It is not a de Polignac number, because 3784990189 - 2¹³ = 3784981997 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 (3784990199) 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 3 ways as a sum of consecutive naturals, for example, 22387 + ... + 89839.

It is an arithmetic number, because the mean of its divisors is an integer number (946278439).

Almost surely, 2^3784990189 is an apocalyptic number.

It is an amenable number.

3784990189 is a deficient number, since it is larger than the sum of its proper divisors (123567).

3784990189 is an equidigital number, since it uses as much as digits as its factorization.

3784990189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123566.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The square root of 3784990189 is about 61522.2739257905. The cubic root of 3784990189 is about 1558.4334192561.

The spelling of 3784990189 in words is "three billion, seven hundred eighty-four million, nine hundred ninety thousand, one hundred eighty-nine".