2150205161 has 8 divisors (see below), whose sum is σ = 2378190024. Its totient is φ = 1931160960.

The previous prime is 2150205157. The next prime is 2150205199. The reversal of 2150205161 is 1615020512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 129163225 + 2021041936 = 11365^2 + 44956^2 .

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 2150205161 - 2² = 2150205157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150205361) 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, 2234660 + ... + 2235621.

It is an arithmetic number, because the mean of its divisors is an integer number (297273753).

Almost surely, 2^2150205161 is an apocalyptic number.

It is an amenable number.

2150205161 is a deficient number, since it is larger than the sum of its proper divisors (227984863).

2150205161 is a wasteful number, since it uses less digits than its factorization.

2150205161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470331.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2150205161 is about 46370.3047326627. The cubic root of 2150205161 is about 1290.7039326531.

Adding to 2150205161 its reverse (1615020512), we get a palindrome (3765225673).

The spelling of 2150205161 in words is "two billion, one hundred fifty million, two hundred five thousand, one hundred sixty-one".