2192922181865 has 16 divisors (see below), whose sum is σ = 2689423188816. Its totient is φ = 1716044486400.

The previous prime is 2192922181817. The next prime is 2192922181867. The reversal of 2192922181865 is 5681812292912.

It can be written as a sum of positive squares in 8 ways, for example, as 650427733081 + 1542494448784 = 806491^2 + 1241972^2 .

It is not a de Polignac number, because 2192922181865 - 2¹² = 2192922177769 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2192922181865.

It is not an unprimeable number, because it can be changed into a prime (2192922181867) 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, 19806422 + ... + 19916831.

It is an arithmetic number, because the mean of its divisors is an integer number (168088949301).

Almost surely, 2^{2192922181865} is an apocalyptic number.

It is an amenable number.

2192922181865 is a deficient number, since it is larger than the sum of its proper divisors (496501006951).

2192922181865 is a wasteful number, since it uses less digits than its factorization.

2192922181865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39723500.

The product of its digits is 2488320, while the sum is 56.

The spelling of 2192922181865 in words is "two trillion, one hundred ninety-two billion, nine hundred twenty-two million, one hundred eighty-one thousand, eight hundred sixty-five".