3728123349 has 16 divisors (see below), whose sum is σ = 5089953792. Its totient is φ = 2425934448.

The previous prime is 3728123339. The next prime is 3728123351. The reversal of 3728123349 is 9433218273.

It is not a de Polignac number, because 3728123349 - 2⁷ = 3728123221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3728123349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728123339) 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, 192922 + ... + 211364.

It is an arithmetic number, because the mean of its divisors is an integer number (318122112).

Almost surely, 2^3728123349 is an apocalyptic number.

It is an amenable number.

3728123349 is a deficient number, since it is larger than the sum of its proper divisors (1361830443).

3728123349 is a wasteful number, since it uses less digits than its factorization.

3728123349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20056.

The product of its digits is 217728, while the sum is 42.

The square root of 3728123349 is about 61058.3601892484. The cubic root of 3728123349 is about 1550.5892104696.

The spelling of 3728123349 in words is "three billion, seven hundred twenty-eight million, one hundred twenty-three thousand, three hundred forty-nine".