3728662529 has 4 divisors (see below), whose sum is σ = 3730734660. Its totient is φ = 3726590400.

The previous prime is 3728662523. The next prime is 3728662541. The reversal of 3728662529 is 9252668273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9252668273 = 83 ⋅111477931.

It can be written as a sum of positive squares in 2 ways, for example, as 189007504 + 3539655025 = 13748^2 + 59495^2 .

It is a cyclic number.

It is not a de Polignac number, because 3728662529 - 2²⁴ = 3711885313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3728662523) 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, 1033364 + ... + 1036965.

It is an arithmetic number, because the mean of its divisors is an integer number (932683665).

Almost surely, 2^3728662529 is an apocalyptic number.

It is an amenable number.

3728662529 is a deficient number, since it is larger than the sum of its proper divisors (2072131).

3728662529 is a wasteful number, since it uses less digits than its factorization.

3728662529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072130.

The product of its digits is 2177280, while the sum is 50.

The square root of 3728662529 is about 61062.7753136066. The cubic root of 3728662529 is about 1550.6639582101.

The spelling of 3728662529 in words is "three billion, seven hundred twenty-eight million, six hundred sixty-two thousand, five hundred twenty-nine".