3804142561 has 4 divisors (see below), whose sum is σ = 3805741312. Its totient is φ = 3802543812.

The previous prime is 3804142487. The next prime is 3804142567. The reversal of 3804142561 is 1652414083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1652414083 = 193 ⋅8561731.

It is a cyclic number.

It is not a de Polignac number, because 3804142561 - 2⁹ = 3804142049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3804142567) 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 3 ways as a sum of consecutive naturals, for example, 795801 + ... + 800566.

It is an arithmetic number, because the mean of its divisors is an integer number (951435328).

Almost surely, 2^3804142561 is an apocalyptic number.

It is an amenable number.

3804142561 is a deficient number, since it is larger than the sum of its proper divisors (1598751).

3804142561 is a wasteful number, since it uses less digits than its factorization.

3804142561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598750.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 3804142561 is about 61677.7314838994. The cubic root of 3804142561 is about 1561.0575998733.

The spelling of 3804142561 in words is "three billion, eight hundred four million, one hundred forty-two thousand, five hundred sixty-one".