3826725128 has 12 divisors (see below), whose sum is σ = 7175437695. Its totient is φ = 1913275080.

The previous prime is 3826725121. The next prime is 3826725173. The reversal of 3826725128 is 8215276283.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1913362564 + 1913362564 = 43742^2 + 43742^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=43742.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3826725121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 164033 + ... + 185903.

Almost surely, 2^3826725128 is an apocalyptic number.

It is an amenable number.

3826725128 is a deficient number, since it is larger than the sum of its proper divisors (3348712567).

3826725128 is an frugal number, since it uses more digits than its factorization.

3826725128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43748 (or 21873 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 3826725128 is about 61860.5296453239. The cubic root of 3826725128 is about 1564.1404811859.

The spelling of 3826725128 in words is "three billion, eight hundred twenty-six million, seven hundred twenty-five thousand, one hundred twenty-eight".