2162277161 has 8 divisors (see below), whose sum is σ = 2385352800. Its totient is φ = 1943619040.

The previous prime is 2162277157. The next prime is 2162277179. The reversal of 2162277161 is 1617722612.

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

It is not a de Polignac number, because 2162277161 - 2² = 2162277157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2162277101) 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, 1103351 + ... + 1105308.

It is an arithmetic number, because the mean of its divisors is an integer number (298169100).

Almost surely, 2^2162277161 is an apocalyptic number.

It is an amenable number.

2162277161 is a deficient number, since it is larger than the sum of its proper divisors (223075639).

2162277161 is a wasteful number, since it uses less digits than its factorization.

2162277161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208759.

The product of its digits is 14112, while the sum is 35.

The square root of 2162277161 is about 46500.2920528463. The cubic root of 2162277161 is about 1293.1149132440.

Adding to 2162277161 its reverse (1617722612), we get a palindrome (3779999773).

The spelling of 2162277161 in words is "two billion, one hundred sixty-two million, two hundred seventy-seven thousand, one hundred sixty-one".