2104161361 has 8 divisors (see below), whose sum is σ = 2129514984. Its totient is φ = 2078926080.

The previous prime is 2104161347. The next prime is 2104161391. The reversal of 2104161361 is 1631614012.

It can be written as a sum of positive squares in 4 ways, for example, as 229704336 + 1874457025 = 15156^2 + 43295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2104161361 - 2⁵ = 2104161329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104161391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6451 + ... + 65191.

It is an arithmetic number, because the mean of its divisors is an integer number (266189373).

Almost surely, 2^2104161361 is an apocalyptic number.

It is an amenable number.

2104161361 is a deficient number, since it is larger than the sum of its proper divisors (25353623).

2104161361 is a wasteful number, since it uses less digits than its factorization.

2104161361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59171.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2104161361 is about 45871.1386494820. The cubic root of 2104161361 is about 1281.4244723070.

Adding to 2104161361 its reverse (1631614012), we get a palindrome (3735775373).

The spelling of 2104161361 in words is "two billion, one hundred four million, one hundred sixty-one thousand, three hundred sixty-one".