3728681241 has 4 divisors (see below), whose sum is σ = 4971574992. Its totient is φ = 2485787492.

The previous prime is 3728681191. The next prime is 3728681249. The reversal of 3728681241 is 1421868273.

3728681241 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3728681241 - 2⁷ = 3728681113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3728681193 and 3728681202.

It is not an unprimeable number, because it can be changed into a prime (3728681249) 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, 621446871 + ... + 621446876.

It is an arithmetic number, because the mean of its divisors is an integer number (1242893748).

Almost surely, 2^3728681241 is an apocalyptic number.

It is an amenable number.

3728681241 is a deficient number, since it is larger than the sum of its proper divisors (1242893751).

3728681241 is a wasteful number, since it uses less digits than its factorization.

3728681241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242893750.

The product of its digits is 129024, while the sum is 42.

The square root of 3728681241 is about 61062.9285327849. The cubic root of 3728681241 is about 1550.6665521675. Note that the first 3 decimals are identical.

The spelling of 3728681241 in words is "three billion, seven hundred twenty-eight million, six hundred eighty-one thousand, two hundred forty-one".