3858124852521 has 27 divisors (see below), whose sum is σ = 5650863181509. Its totient is φ = 2536566371712.

The previous prime is 3858124852507. The next prime is 3858124852577. The reversal of 3858124852521 is 1252584218583.

The square root of 3858124852521 is 1964211.

It is a perfect power (a square), and thus also a powerful number.

3858124852521 is a `hidden beast` number, since 3 + 8 + 58 + 1 + 2 + 48 + 525 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35568074025 + 3822556778496 = 188595^2 + 1955136^2 .

It is not a de Polignac number, because 3858124852521 - 2⁵ = 3858124852489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3858124852501) 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 26 ways as a sum of consecutive naturals, for example, 430157725 + ... + 430166693.

Almost surely, 2^{3858124852521} is an apocalyptic number.

3858124852521 is the 1964211-st square number.

3858124852521 is the 982106-th centered octagonal number.

It is an amenable number.

3858124852521 is a deficient number, since it is larger than the sum of its proper divisors (1792738328988).

3858124852521 is an frugal number, since it uses more digits than its factorization.

3858124852521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18090 (or 9045 counting only the distinct ones).

The product of its digits is 6144000, while the sum is 54.

The spelling of 3858124852521 in words is "three trillion, eight hundred fifty-eight billion, one hundred twenty-four million, eight hundred fifty-two thousand, five hundred twenty-one".