2162194774 has 4 divisors (see below), whose sum is σ = 3243292164. Its totient is φ = 1081097386.

The previous prime is 2162194763. The next prime is 2162194777. The reversal of 2162194774 is 4774912612.

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

It is a super-2 number, since 2×2162194774² = 9350172481425822152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2162194774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162194777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540548692 + ... + 540548695.

It is an arithmetic number, because the mean of its divisors is an integer number (810823041).

Almost surely, 2^2162194774 is an apocalyptic number.

2162194774 is a deficient number, since it is larger than the sum of its proper divisors (1081097390).

2162194774 is a wasteful number, since it uses less digits than its factorization.

2162194774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081097389.

The product of its digits is 169344, while the sum is 43.

The square root of 2162194774 is about 46499.4061682512. The cubic root of 2162194774 is about 1293.0984896307.

The spelling of 2162194774 in words is "two billion, one hundred sixty-two million, one hundred ninety-four thousand, seven hundred seventy-four".