3846061521 has 20 divisors (see below), whose sum is σ = 6083315172. Its totient is φ = 2413214208.

The previous prime is 3846061493. The next prime is 3846061537. The reversal of 3846061521 is 1251606483.

It is a happy number.

3846061521 is a `hidden beast` number, since 38 + 4 + 6 + 0 + 615 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2202894225 + 1643167296 = 46935^2 + 40536^2 .

It is not a de Polignac number, because 3846061521 - 2¹³ = 3846053329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3846061591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1395160 + ... + 1397913.

Almost surely, 2^3846061521 is an apocalyptic number.

It is an amenable number.

3846061521 is a deficient number, since it is larger than the sum of its proper divisors (2237253651).

3846061521 is a wasteful number, since it uses less digits than its factorization.

3846061521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793102 (or 2793093 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3846061521 is about 62016.6229409503. The cubic root of 3846061521 is about 1566.7705834546.

The spelling of 3846061521 in words is "three billion, eight hundred forty-six million, sixty-one thousand, five hundred twenty-one".