3728673937 has 4 divisors (see below), whose sum is σ = 3948007716. Its totient is φ = 3509340160.

The previous prime is 3728673931. The next prime is 3728673941. The reversal of 3728673937 is 7393768273.

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 1153009936 + 2575664001 = 33956^2 + 50751^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728673937 - 2¹¹ = 3728671889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3728673931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109666864 + ... + 109666897.

It is an arithmetic number, because the mean of its divisors is an integer number (987001929).

Almost surely, 2^3728673937 is an apocalyptic number.

It is an amenable number.

3728673937 is a deficient number, since it is larger than the sum of its proper divisors (219333779).

3728673937 is a wasteful number, since it uses less digits than its factorization.

3728673937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219333778.

The product of its digits is 8001504, while the sum is 55.

The square root of 3728673937 is about 61062.8687256012. The cubic root of 3728673937 is about 1550.6655396490.

The spelling of 3728673937 in words is "three billion, seven hundred twenty-eight million, six hundred seventy-three thousand, nine hundred thirty-seven".