3805201561 has 16 divisors (see below), whose sum is σ = 4371510528. Its totient is φ = 3244608000.

The previous prime is 3805201549. The next prime is 3805201567. The reversal of 3805201561 is 1651025083.

3805201561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3805201561 - 2¹³ = 3805193369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3805201567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2210181 + ... + 2211901.

It is an arithmetic number, because the mean of its divisors is an integer number (273219408).

Almost surely, 2^3805201561 is an apocalyptic number.

It is an amenable number.

3805201561 is a deficient number, since it is larger than the sum of its proper divisors (566308967).

3805201561 is a wasteful number, since it uses less digits than its factorization.

3805201561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 3805201561 is about 61686.3158326059. The cubic root of 3805201561 is about 1561.2024425541.

The spelling of 3805201561 in words is "three billion, eight hundred five million, two hundred one thousand, five hundred sixty-one".