3728610049 has 4 divisors (see below), whose sum is σ = 3798961236. Its totient is φ = 3658258864.

The previous prime is 3728610043. The next prime is 3728610089. The reversal of 3728610049 is 9400168273.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2082279424 + 1646330625 = 45632^2 + 40575^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728610049 - 2¹¹ = 3728608001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3728609993 and 3728610020.

It is not an unprimeable number, because it can be changed into a prime (3728610043) 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, 35175514 + ... + 35175619.

It is an arithmetic number, because the mean of its divisors is an integer number (949740309).

Almost surely, 2^3728610049 is an apocalyptic number.

It is an amenable number.

3728610049 is a deficient number, since it is larger than the sum of its proper divisors (70351187).

3728610049 is an equidigital number, since it uses as much as digits as its factorization.

3728610049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70351186.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 3728610049 is about 61062.3455903882. The cubic root of 3728610049 is about 1550.6566831058.

The spelling of 3728610049 in words is "three billion, seven hundred twenty-eight million, six hundred ten thousand, forty-nine".