2165497918183 has 4 divisors (see below), whose sum is σ = 2184661616688. Its totient is φ = 2146334219680.

The previous prime is 2165497918159. The next prime is 2165497918193. The reversal of 2165497918183 is 3818197945612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2165497918183 - 2⁵ = 2165497918151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165497918123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9581849083 + ... + 9581849308.

It is an arithmetic number, because the mean of its divisors is an integer number (546165404172).

Almost surely, 2^{2165497918183} is an apocalyptic number.

2165497918183 is a deficient number, since it is larger than the sum of its proper divisors (19163698505).

2165497918183 is a wasteful number, since it uses less digits than its factorization.

2165497918183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163698504.

The product of its digits is 26127360, while the sum is 64.

The spelling of 2165497918183 in words is "two trillion, one hundred sixty-five billion, four hundred ninety-seven million, nine hundred eighteen thousand, one hundred eighty-three".