2193160066 has 4 divisors (see below), whose sum is σ = 3289740102. Its totient is φ = 1096580032.

The previous prime is 2193160049. The next prime is 2193160091. The reversal of 2193160066 is 6600613912.

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

It can be written as a sum of positive squares in only one way, i.e., 1311960841 + 881199225 = 36221^2 + 29685^2 .

It is a super-4 number, since 4×2193160066⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548290015 + ... + 548290018.

Almost surely, 2^2193160066 is an apocalyptic number.

2193160066 is a deficient number, since it is larger than the sum of its proper divisors (1096580036).

2193160066 is a wasteful number, since it uses less digits than its factorization.

2193160066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096580035.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2193160066 is about 46831.1868950596. The cubic root of 2193160066 is about 1299.2421748855.

Adding to 2193160066 its reverse (6600613912), we get a palindrome (8793773978).

The spelling of 2193160066 in words is "two billion, one hundred ninety-three million, one hundred sixty thousand, sixty-six".