2194422869 has 4 divisors (see below), whose sum is σ = 2247945420. Its totient is φ = 2140900320.

The previous prime is 2194422821. The next prime is 2194422887. The reversal of 2194422869 is 9682244912.

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

It can be written as a sum of positive squares in 2 ways, for example, as 621903844 + 1572519025 = 24938^2 + 39655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2194422869 is a prime.

It is a super-2 number, since 2×2194422869² = 9630983455980382322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194442869) 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, 26761214 + ... + 26761295.

It is an arithmetic number, because the mean of its divisors is an integer number (561986355).

Almost surely, 2^2194422869 is an apocalyptic number.

It is an amenable number.

2194422869 is a deficient number, since it is larger than the sum of its proper divisors (53522551).

2194422869 is an equidigital number, since it uses as much as digits as its factorization.

2194422869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53522550.

The product of its digits is 497664, while the sum is 47.

The square root of 2194422869 is about 46844.6674553252. The cubic root of 2194422869 is about 1299.4914912554.

The spelling of 2194422869 in words is "two billion, one hundred ninety-four million, four hundred twenty-two thousand, eight hundred sixty-nine".