361646161 has 8 divisors (see below), whose sum is σ = 369286344. Its totient is φ = 354078720.

The previous prime is 361646149. The next prime is 361646179. The reversal of 361646161 is 161646163.

It can be written as a sum of positive squares in 4 ways, for example, as 125440000 + 236206161 = 11200^2 + 15369^2 .

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 361646161 - 2⁹ = 361645649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361646111) 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, 8080 + ... + 28081.

It is an arithmetic number, because the mean of its divisors is an integer number (46160793).

Almost surely, 2^361646161 is an apocalyptic number.

It is an amenable number.

361646161 is a deficient number, since it is larger than the sum of its proper divisors (7640183).

361646161 is a wasteful number, since it uses less digits than its factorization.

361646161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36371.

The product of its digits is 15552, while the sum is 34.

The square root of 361646161 is about 19016.9966345898. The cubic root of 361646161 is about 712.4613121909.

The spelling of 361646161 in words is "three hundred sixty-one million, six hundred forty-six thousand, one hundred sixty-one".