2118270161 has 16 divisors (see below), whose sum is σ = 2457612288. Its totient is φ = 1788166800.

The previous prime is 2118270137. The next prime is 2118270173. The reversal of 2118270161 is 1610728112.

It is not a de Polignac number, because 2118270161 - 2³⁰ = 1044528337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118270181) 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, 645956 + ... + 649226.

It is an arithmetic number, because the mean of its divisors is an integer number (153600768).

Almost surely, 2^2118270161 is an apocalyptic number.

It is an amenable number.

2118270161 is a deficient number, since it is larger than the sum of its proper divisors (339342127).

2118270161 is a wasteful number, since it uses less digits than its factorization.

2118270161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4652.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 2118270161 is about 46024.6690482398. The cubic root of 2118270161 is about 1284.2821591861.

Adding to 2118270161 its reverse (1610728112), we get a palindrome (3728998273).

The spelling of 2118270161 in words is "two billion, one hundred eighteen million, two hundred seventy thousand, one hundred sixty-one".