3728938068 has 18 divisors (see below), whose sum is σ = 9425926874. Its totient is φ = 1242979344.

The previous prime is 3728938063. The next prime is 3728938099. The reversal of 3728938068 is 8608398273.

It can be written as a sum of positive squares in only one way, i.e., 2836840644 + 892097424 = 53262^2 + 29868^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×3728938068² = 27809958229959145248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728938063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51790771 + ... + 51790842.

Almost surely, 2^3728938068 is an apocalyptic number.

It is an amenable number.

3728938068 is an abundant number, since it is smaller than the sum of its proper divisors (5696988806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3728938068 is a wasteful number, since it uses less digits than its factorization.

3728938068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103581623 (or 103581618 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 3728938068 is about 61065.0314664620. The cubic root of 3728938068 is about 1550.7021540214.

It can be divided in two parts, 37289 and 38068, that added together give a palindrome (75357).

The spelling of 3728938068 in words is "three billion, seven hundred twenty-eight million, nine hundred thirty-eight thousand, sixty-eight".