3728201839 has 4 divisors (see below), whose sum is σ = 3735330856. Its totient is φ = 3721072824.

The previous prime is 3728201837. The next prime is 3728201849. The reversal of 3728201839 is 9381028273.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3728201839 - 2¹ = 3728201837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3728201795 and 3728201804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728201837) 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, 3563724 + ... + 3564769.

It is an arithmetic number, because the mean of its divisors is an integer number (933832714).

Almost surely, 2^3728201839 is an apocalyptic number.

3728201839 is a deficient number, since it is larger than the sum of its proper divisors (7129017).

3728201839 is an equidigital number, since it uses as much as digits as its factorization.

3728201839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129016.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 3728201839 is about 61059.0029315907. The cubic root of 3728201839 is about 1550.6000921637.

The spelling of 3728201839 in words is "three billion, seven hundred twenty-eight million, two hundred one thousand, eight hundred thirty-nine".