3728689369 has 2 divisors, whose sum is σ = 3728689370. Its totient is φ = 3728689368.

The previous prime is 3728689361. The next prime is 3728689381. The reversal of 3728689369 is 9639868273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2239655625 + 1489033744 = 47325^2 + 38588^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728689369 - 2³ = 3728689361 is a prime.

It is a super-2 number, since 2×3728689369² = 27806248820987236322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3728689361) 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 as a sum of consecutive naturals, namely, 1864344684 + 1864344685.

It is an arithmetic number, because the mean of its divisors is an integer number (1864344685).

Almost surely, 2^3728689369 is an apocalyptic number.

It is an amenable number.

3728689369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728689369 is an equidigital number, since it uses as much as digits as its factorization.

3728689369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 61.

The square root of 3728689369 is about 61062.9950870411. The cubic root of 3728689369 is about 1550.6676789116.

The spelling of 3728689369 in words is "three billion, seven hundred twenty-eight million, six hundred eighty-nine thousand, three hundred sixty-nine".