3841528681 has 4 divisors (see below), whose sum is σ = 3841734100. Its totient is φ = 3841323264.

The previous prime is 3841528643. The next prime is 3841528721. The reversal of 3841528681 is 1868251483.

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 962240400 + 2879288281 = 31020^2 + 53659^2 .

It is a cyclic number.

It is not a de Polignac number, because 3841528681 - 2¹³ = 3841520489 is a prime.

It is a super-2 number, since 2×3841528681² = 29514685213891199522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3841528381) 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, 71496 + ... + 113113.

It is an arithmetic number, because the mean of its divisors is an integer number (960433525).

Almost surely, 2^3841528681 is an apocalyptic number.

It is an amenable number.

3841528681 is a deficient number, since it is larger than the sum of its proper divisors (205419).

3841528681 is a wasteful number, since it uses less digits than its factorization.

3841528681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205418.

The product of its digits is 368640, while the sum is 46.

The square root of 3841528681 is about 61980.0668037717. The cubic root of 3841528681 is about 1566.1548269472.

The spelling of 3841528681 in words is "three billion, eight hundred forty-one million, five hundred twenty-eight thousand, six hundred eighty-one".