3004161561 has 16 divisors (see below), whose sum is σ = 4484589120. Its totient is φ = 1987483680.

The previous prime is 3004161541. The next prime is 3004161569. The reversal of 3004161561 is 1651614003.

3004161561 is a `hidden beast` number, since 3 + 0 + 0 + 41 + 61 + 561 = 666.

It is not a de Polignac number, because 3004161561 - 2²⁷ = 2869943833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3004161569) 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, 421140 + ... + 428213.

It is an arithmetic number, because the mean of its divisors is an integer number (280286820).

Almost surely, 2^3004161561 is an apocalyptic number.

It is an amenable number.

3004161561 is a deficient number, since it is larger than the sum of its proper divisors (1480427559).

3004161561 is a wasteful number, since it uses less digits than its factorization.

3004161561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849493 (or 849487 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3004161561 is about 54810.2322655177. The cubic root of 3004161561 is about 1442.9161521294.

Adding to 3004161561 its reverse (1651614003), we get a palindrome (4655775564).

The spelling of 3004161561 in words is "three billion, four million, one hundred sixty-one thousand, five hundred sixty-one".